avcodec/cavsdsp: use av_clip_uint8() for idct
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/eval.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/time.h"
43 #include "libavformat/avformat.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
46 #include "libavutil/opt.h"
47 #include "libavcodec/avfft.h"
48 #include "libswresample/swresample.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/buffersink.h"
53 # include "libavfilter/buffersrc.h"
54 #endif
55
56 #include <SDL.h>
57 #include <SDL_thread.h>
58
59 #include "cmdutils.h"
60
61 #include <assert.h>
62
63 const char program_name[] = "ffplay";
64 const int program_birth_year = 2003;
65
66 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
67 #define MIN_FRAMES 25
68 #define EXTERNAL_CLOCK_MIN_FRAMES 2
69 #define EXTERNAL_CLOCK_MAX_FRAMES 10
70
71 /* Minimum SDL audio buffer size, in samples. */
72 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
73 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
74 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
75
76 /* Step size for volume control */
77 #define SDL_VOLUME_STEP (SDL_MIX_MAXVOLUME / 50)
78
79 /* no AV sync correction is done if below the minimum AV sync threshold */
80 #define AV_SYNC_THRESHOLD_MIN 0.04
81 /* AV sync correction is done if above the maximum AV sync threshold */
82 #define AV_SYNC_THRESHOLD_MAX 0.1
83 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
84 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
85 /* no AV correction is done if too big error */
86 #define AV_NOSYNC_THRESHOLD 10.0
87
88 /* maximum audio speed change to get correct sync */
89 #define SAMPLE_CORRECTION_PERCENT_MAX 10
90
91 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
92 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
93 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
94 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
95
96 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
97 #define AUDIO_DIFF_AVG_NB   20
98
99 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
100 #define REFRESH_RATE 0.01
101
102 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
103 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
104 #define SAMPLE_ARRAY_SIZE (8 * 65536)
105
106 #define CURSOR_HIDE_DELAY 1000000
107
108 static unsigned sws_flags = SWS_BICUBIC;
109
110 typedef struct MyAVPacketList {
111     AVPacket pkt;
112     struct MyAVPacketList *next;
113     int serial;
114 } MyAVPacketList;
115
116 typedef struct PacketQueue {
117     MyAVPacketList *first_pkt, *last_pkt;
118     int nb_packets;
119     int size;
120     int64_t duration;
121     int abort_request;
122     int serial;
123     SDL_mutex *mutex;
124     SDL_cond *cond;
125 } PacketQueue;
126
127 #define VIDEO_PICTURE_QUEUE_SIZE 3
128 #define SUBPICTURE_QUEUE_SIZE 16
129 #define SAMPLE_QUEUE_SIZE 9
130 #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
131
132 typedef struct AudioParams {
133     int freq;
134     int channels;
135     int64_t channel_layout;
136     enum AVSampleFormat fmt;
137     int frame_size;
138     int bytes_per_sec;
139 } AudioParams;
140
141 typedef struct Clock {
142     double pts;           /* clock base */
143     double pts_drift;     /* clock base minus time at which we updated the clock */
144     double last_updated;
145     double speed;
146     int serial;           /* clock is based on a packet with this serial */
147     int paused;
148     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
149 } Clock;
150
151 /* Common struct for handling all types of decoded data and allocated render buffers. */
152 typedef struct Frame {
153     AVFrame *frame;
154     AVSubtitle sub;
155     AVSubtitleRect **subrects;  /* rescaled subtitle rectangles in yuva */
156     int serial;
157     double pts;           /* presentation timestamp for the frame */
158     double duration;      /* estimated duration of the frame */
159     int64_t pos;          /* byte position of the frame in the input file */
160     SDL_Overlay *bmp;
161     int allocated;
162     int reallocate;
163     int width;
164     int height;
165     AVRational sar;
166 } Frame;
167
168 typedef struct FrameQueue {
169     Frame queue[FRAME_QUEUE_SIZE];
170     int rindex;
171     int windex;
172     int size;
173     int max_size;
174     int keep_last;
175     int rindex_shown;
176     SDL_mutex *mutex;
177     SDL_cond *cond;
178     PacketQueue *pktq;
179 } FrameQueue;
180
181 enum {
182     AV_SYNC_AUDIO_MASTER, /* default choice */
183     AV_SYNC_VIDEO_MASTER,
184     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
185 };
186
187 typedef struct Decoder {
188     AVPacket pkt;
189     AVPacket pkt_temp;
190     PacketQueue *queue;
191     AVCodecContext *avctx;
192     int pkt_serial;
193     int finished;
194     int packet_pending;
195     SDL_cond *empty_queue_cond;
196     int64_t start_pts;
197     AVRational start_pts_tb;
198     int64_t next_pts;
199     AVRational next_pts_tb;
200     SDL_Thread *decoder_tid;
201 } Decoder;
202
203 typedef struct VideoState {
204     SDL_Thread *read_tid;
205     AVInputFormat *iformat;
206     int abort_request;
207     int force_refresh;
208     int paused;
209     int last_paused;
210     int queue_attachments_req;
211     int seek_req;
212     int seek_flags;
213     int64_t seek_pos;
214     int64_t seek_rel;
215     int read_pause_return;
216     AVFormatContext *ic;
217     int realtime;
218
219     Clock audclk;
220     Clock vidclk;
221     Clock extclk;
222
223     FrameQueue pictq;
224     FrameQueue subpq;
225     FrameQueue sampq;
226
227     Decoder auddec;
228     Decoder viddec;
229     Decoder subdec;
230
231     int viddec_width;
232     int viddec_height;
233
234     int audio_stream;
235
236     int av_sync_type;
237
238     double audio_clock;
239     int audio_clock_serial;
240     double audio_diff_cum; /* used for AV difference average computation */
241     double audio_diff_avg_coef;
242     double audio_diff_threshold;
243     int audio_diff_avg_count;
244     AVStream *audio_st;
245     PacketQueue audioq;
246     int audio_hw_buf_size;
247     uint8_t *audio_buf;
248     uint8_t *audio_buf1;
249     unsigned int audio_buf_size; /* in bytes */
250     unsigned int audio_buf1_size;
251     int audio_buf_index; /* in bytes */
252     int audio_write_buf_size;
253     int audio_volume;
254     int muted;
255     struct AudioParams audio_src;
256 #if CONFIG_AVFILTER
257     struct AudioParams audio_filter_src;
258 #endif
259     struct AudioParams audio_tgt;
260     struct SwrContext *swr_ctx;
261     int frame_drops_early;
262     int frame_drops_late;
263
264     enum ShowMode {
265         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
266     } show_mode;
267     int16_t sample_array[SAMPLE_ARRAY_SIZE];
268     int sample_array_index;
269     int last_i_start;
270     RDFTContext *rdft;
271     int rdft_bits;
272     FFTSample *rdft_data;
273     int xpos;
274     double last_vis_time;
275
276     int subtitle_stream;
277     AVStream *subtitle_st;
278     PacketQueue subtitleq;
279
280     double frame_timer;
281     double frame_last_returned_time;
282     double frame_last_filter_delay;
283     int video_stream;
284     AVStream *video_st;
285     PacketQueue videoq;
286     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
287 #if !CONFIG_AVFILTER
288     struct SwsContext *img_convert_ctx;
289 #endif
290     struct SwsContext *sub_convert_ctx;
291     SDL_Rect last_display_rect;
292     int eof;
293
294     char *filename;
295     int width, height, xleft, ytop;
296     int step;
297
298 #if CONFIG_AVFILTER
299     int vfilter_idx;
300     AVFilterContext *in_video_filter;   // the first filter in the video chain
301     AVFilterContext *out_video_filter;  // the last filter in the video chain
302     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
303     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
304     AVFilterGraph *agraph;              // audio filter graph
305 #endif
306
307     int last_video_stream, last_audio_stream, last_subtitle_stream;
308
309     SDL_cond *continue_read_thread;
310 } VideoState;
311
312 /* options specified by the user */
313 static AVInputFormat *file_iformat;
314 static const char *input_filename;
315 static const char *window_title;
316 static int fs_screen_width;
317 static int fs_screen_height;
318 static int default_width  = 640;
319 static int default_height = 480;
320 static int screen_width  = 0;
321 static int screen_height = 0;
322 static int audio_disable;
323 static int video_disable;
324 static int subtitle_disable;
325 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
326 static int seek_by_bytes = -1;
327 static int display_disable;
328 static int show_status = 1;
329 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
330 static int64_t start_time = AV_NOPTS_VALUE;
331 static int64_t duration = AV_NOPTS_VALUE;
332 static int fast = 0;
333 static int genpts = 0;
334 static int lowres = 0;
335 static int decoder_reorder_pts = -1;
336 static int autoexit;
337 static int exit_on_keydown;
338 static int exit_on_mousedown;
339 static int loop = 1;
340 static int framedrop = -1;
341 static int infinite_buffer = -1;
342 static enum ShowMode show_mode = SHOW_MODE_NONE;
343 static const char *audio_codec_name;
344 static const char *subtitle_codec_name;
345 static const char *video_codec_name;
346 double rdftspeed = 0.02;
347 static int64_t cursor_last_shown;
348 static int cursor_hidden = 0;
349 #if CONFIG_AVFILTER
350 static const char **vfilters_list = NULL;
351 static int nb_vfilters = 0;
352 static char *afilters = NULL;
353 #endif
354 static int autorotate = 1;
355
356 /* current context */
357 static int is_full_screen;
358 static int64_t audio_callback_time;
359
360 static AVPacket flush_pkt;
361
362 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
363 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
364
365 static SDL_Surface *screen;
366
367 #if CONFIG_AVFILTER
368 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
369 {
370     GROW_ARRAY(vfilters_list, nb_vfilters);
371     vfilters_list[nb_vfilters - 1] = arg;
372     return 0;
373 }
374 #endif
375
376 static inline
377 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
378                    enum AVSampleFormat fmt2, int64_t channel_count2)
379 {
380     /* If channel count == 1, planar and non-planar formats are the same */
381     if (channel_count1 == 1 && channel_count2 == 1)
382         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
383     else
384         return channel_count1 != channel_count2 || fmt1 != fmt2;
385 }
386
387 static inline
388 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
389 {
390     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
391         return channel_layout;
392     else
393         return 0;
394 }
395
396 static void free_picture(Frame *vp);
397
398 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
399 {
400     MyAVPacketList *pkt1;
401
402     if (q->abort_request)
403        return -1;
404
405     pkt1 = av_malloc(sizeof(MyAVPacketList));
406     if (!pkt1)
407         return -1;
408     pkt1->pkt = *pkt;
409     pkt1->next = NULL;
410     if (pkt == &flush_pkt)
411         q->serial++;
412     pkt1->serial = q->serial;
413
414     if (!q->last_pkt)
415         q->first_pkt = pkt1;
416     else
417         q->last_pkt->next = pkt1;
418     q->last_pkt = pkt1;
419     q->nb_packets++;
420     q->size += pkt1->pkt.size + sizeof(*pkt1);
421     q->duration += pkt1->pkt.duration;
422     /* XXX: should duplicate packet data in DV case */
423     SDL_CondSignal(q->cond);
424     return 0;
425 }
426
427 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
428 {
429     int ret;
430
431     SDL_LockMutex(q->mutex);
432     ret = packet_queue_put_private(q, pkt);
433     SDL_UnlockMutex(q->mutex);
434
435     if (pkt != &flush_pkt && ret < 0)
436         av_packet_unref(pkt);
437
438     return ret;
439 }
440
441 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
442 {
443     AVPacket pkt1, *pkt = &pkt1;
444     av_init_packet(pkt);
445     pkt->data = NULL;
446     pkt->size = 0;
447     pkt->stream_index = stream_index;
448     return packet_queue_put(q, pkt);
449 }
450
451 /* packet queue handling */
452 static int packet_queue_init(PacketQueue *q)
453 {
454     memset(q, 0, sizeof(PacketQueue));
455     q->mutex = SDL_CreateMutex();
456     if (!q->mutex) {
457         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
458         return AVERROR(ENOMEM);
459     }
460     q->cond = SDL_CreateCond();
461     if (!q->cond) {
462         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
463         return AVERROR(ENOMEM);
464     }
465     q->abort_request = 1;
466     return 0;
467 }
468
469 static void packet_queue_flush(PacketQueue *q)
470 {
471     MyAVPacketList *pkt, *pkt1;
472
473     SDL_LockMutex(q->mutex);
474     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
475         pkt1 = pkt->next;
476         av_packet_unref(&pkt->pkt);
477         av_freep(&pkt);
478     }
479     q->last_pkt = NULL;
480     q->first_pkt = NULL;
481     q->nb_packets = 0;
482     q->size = 0;
483     q->duration = 0;
484     SDL_UnlockMutex(q->mutex);
485 }
486
487 static void packet_queue_destroy(PacketQueue *q)
488 {
489     packet_queue_flush(q);
490     SDL_DestroyMutex(q->mutex);
491     SDL_DestroyCond(q->cond);
492 }
493
494 static void packet_queue_abort(PacketQueue *q)
495 {
496     SDL_LockMutex(q->mutex);
497
498     q->abort_request = 1;
499
500     SDL_CondSignal(q->cond);
501
502     SDL_UnlockMutex(q->mutex);
503 }
504
505 static void packet_queue_start(PacketQueue *q)
506 {
507     SDL_LockMutex(q->mutex);
508     q->abort_request = 0;
509     packet_queue_put_private(q, &flush_pkt);
510     SDL_UnlockMutex(q->mutex);
511 }
512
513 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
514 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
515 {
516     MyAVPacketList *pkt1;
517     int ret;
518
519     SDL_LockMutex(q->mutex);
520
521     for (;;) {
522         if (q->abort_request) {
523             ret = -1;
524             break;
525         }
526
527         pkt1 = q->first_pkt;
528         if (pkt1) {
529             q->first_pkt = pkt1->next;
530             if (!q->first_pkt)
531                 q->last_pkt = NULL;
532             q->nb_packets--;
533             q->size -= pkt1->pkt.size + sizeof(*pkt1);
534             q->duration -= pkt1->pkt.duration;
535             *pkt = pkt1->pkt;
536             if (serial)
537                 *serial = pkt1->serial;
538             av_free(pkt1);
539             ret = 1;
540             break;
541         } else if (!block) {
542             ret = 0;
543             break;
544         } else {
545             SDL_CondWait(q->cond, q->mutex);
546         }
547     }
548     SDL_UnlockMutex(q->mutex);
549     return ret;
550 }
551
552 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
553     memset(d, 0, sizeof(Decoder));
554     d->avctx = avctx;
555     d->queue = queue;
556     d->empty_queue_cond = empty_queue_cond;
557     d->start_pts = AV_NOPTS_VALUE;
558 }
559
560 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
561     int got_frame = 0;
562
563     do {
564         int ret = -1;
565
566         if (d->queue->abort_request)
567             return -1;
568
569         if (!d->packet_pending || d->queue->serial != d->pkt_serial) {
570             AVPacket pkt;
571             do {
572                 if (d->queue->nb_packets == 0)
573                     SDL_CondSignal(d->empty_queue_cond);
574                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
575                     return -1;
576                 if (pkt.data == flush_pkt.data) {
577                     avcodec_flush_buffers(d->avctx);
578                     d->finished = 0;
579                     d->next_pts = d->start_pts;
580                     d->next_pts_tb = d->start_pts_tb;
581                 }
582             } while (pkt.data == flush_pkt.data || d->queue->serial != d->pkt_serial);
583             av_packet_unref(&d->pkt);
584             d->pkt_temp = d->pkt = pkt;
585             d->packet_pending = 1;
586         }
587
588         switch (d->avctx->codec_type) {
589             case AVMEDIA_TYPE_VIDEO:
590                 ret = avcodec_decode_video2(d->avctx, frame, &got_frame, &d->pkt_temp);
591                 if (got_frame) {
592                     if (decoder_reorder_pts == -1) {
593                         frame->pts = av_frame_get_best_effort_timestamp(frame);
594                     } else if (decoder_reorder_pts) {
595                         frame->pts = frame->pkt_pts;
596                     } else {
597                         frame->pts = frame->pkt_dts;
598                     }
599                 }
600                 break;
601             case AVMEDIA_TYPE_AUDIO:
602                 ret = avcodec_decode_audio4(d->avctx, frame, &got_frame, &d->pkt_temp);
603                 if (got_frame) {
604                     AVRational tb = (AVRational){1, frame->sample_rate};
605                     if (frame->pts != AV_NOPTS_VALUE)
606                         frame->pts = av_rescale_q(frame->pts, d->avctx->time_base, tb);
607                     else if (frame->pkt_pts != AV_NOPTS_VALUE)
608                         frame->pts = av_rescale_q(frame->pkt_pts, av_codec_get_pkt_timebase(d->avctx), tb);
609                     else if (d->next_pts != AV_NOPTS_VALUE)
610                         frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
611                     if (frame->pts != AV_NOPTS_VALUE) {
612                         d->next_pts = frame->pts + frame->nb_samples;
613                         d->next_pts_tb = tb;
614                     }
615                 }
616                 break;
617             case AVMEDIA_TYPE_SUBTITLE:
618                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &d->pkt_temp);
619                 break;
620         }
621
622         if (ret < 0) {
623             d->packet_pending = 0;
624         } else {
625             d->pkt_temp.dts =
626             d->pkt_temp.pts = AV_NOPTS_VALUE;
627             if (d->pkt_temp.data) {
628                 if (d->avctx->codec_type != AVMEDIA_TYPE_AUDIO)
629                     ret = d->pkt_temp.size;
630                 d->pkt_temp.data += ret;
631                 d->pkt_temp.size -= ret;
632                 if (d->pkt_temp.size <= 0)
633                     d->packet_pending = 0;
634             } else {
635                 if (!got_frame) {
636                     d->packet_pending = 0;
637                     d->finished = d->pkt_serial;
638                 }
639             }
640         }
641     } while (!got_frame && !d->finished);
642
643     return got_frame;
644 }
645
646 static void decoder_destroy(Decoder *d) {
647     av_packet_unref(&d->pkt);
648     avcodec_free_context(&d->avctx);
649 }
650
651 static void frame_queue_unref_item(Frame *vp)
652 {
653     int i;
654     for (i = 0; i < vp->sub.num_rects; i++) {
655         av_freep(&vp->subrects[i]->data[0]);
656         av_freep(&vp->subrects[i]);
657     }
658     av_freep(&vp->subrects);
659     av_frame_unref(vp->frame);
660     avsubtitle_free(&vp->sub);
661 }
662
663 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
664 {
665     int i;
666     memset(f, 0, sizeof(FrameQueue));
667     if (!(f->mutex = SDL_CreateMutex())) {
668         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
669         return AVERROR(ENOMEM);
670     }
671     if (!(f->cond = SDL_CreateCond())) {
672         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
673         return AVERROR(ENOMEM);
674     }
675     f->pktq = pktq;
676     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
677     f->keep_last = !!keep_last;
678     for (i = 0; i < f->max_size; i++)
679         if (!(f->queue[i].frame = av_frame_alloc()))
680             return AVERROR(ENOMEM);
681     return 0;
682 }
683
684 static void frame_queue_destory(FrameQueue *f)
685 {
686     int i;
687     for (i = 0; i < f->max_size; i++) {
688         Frame *vp = &f->queue[i];
689         frame_queue_unref_item(vp);
690         av_frame_free(&vp->frame);
691         free_picture(vp);
692     }
693     SDL_DestroyMutex(f->mutex);
694     SDL_DestroyCond(f->cond);
695 }
696
697 static void frame_queue_signal(FrameQueue *f)
698 {
699     SDL_LockMutex(f->mutex);
700     SDL_CondSignal(f->cond);
701     SDL_UnlockMutex(f->mutex);
702 }
703
704 static Frame *frame_queue_peek(FrameQueue *f)
705 {
706     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
707 }
708
709 static Frame *frame_queue_peek_next(FrameQueue *f)
710 {
711     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
712 }
713
714 static Frame *frame_queue_peek_last(FrameQueue *f)
715 {
716     return &f->queue[f->rindex];
717 }
718
719 static Frame *frame_queue_peek_writable(FrameQueue *f)
720 {
721     /* wait until we have space to put a new frame */
722     SDL_LockMutex(f->mutex);
723     while (f->size >= f->max_size &&
724            !f->pktq->abort_request) {
725         SDL_CondWait(f->cond, f->mutex);
726     }
727     SDL_UnlockMutex(f->mutex);
728
729     if (f->pktq->abort_request)
730         return NULL;
731
732     return &f->queue[f->windex];
733 }
734
735 static Frame *frame_queue_peek_readable(FrameQueue *f)
736 {
737     /* wait until we have a readable a new frame */
738     SDL_LockMutex(f->mutex);
739     while (f->size - f->rindex_shown <= 0 &&
740            !f->pktq->abort_request) {
741         SDL_CondWait(f->cond, f->mutex);
742     }
743     SDL_UnlockMutex(f->mutex);
744
745     if (f->pktq->abort_request)
746         return NULL;
747
748     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
749 }
750
751 static void frame_queue_push(FrameQueue *f)
752 {
753     if (++f->windex == f->max_size)
754         f->windex = 0;
755     SDL_LockMutex(f->mutex);
756     f->size++;
757     SDL_CondSignal(f->cond);
758     SDL_UnlockMutex(f->mutex);
759 }
760
761 static void frame_queue_next(FrameQueue *f)
762 {
763     if (f->keep_last && !f->rindex_shown) {
764         f->rindex_shown = 1;
765         return;
766     }
767     frame_queue_unref_item(&f->queue[f->rindex]);
768     if (++f->rindex == f->max_size)
769         f->rindex = 0;
770     SDL_LockMutex(f->mutex);
771     f->size--;
772     SDL_CondSignal(f->cond);
773     SDL_UnlockMutex(f->mutex);
774 }
775
776 /* return the number of undisplayed frames in the queue */
777 static int frame_queue_nb_remaining(FrameQueue *f)
778 {
779     return f->size - f->rindex_shown;
780 }
781
782 /* return last shown position */
783 static int64_t frame_queue_last_pos(FrameQueue *f)
784 {
785     Frame *fp = &f->queue[f->rindex];
786     if (f->rindex_shown && fp->serial == f->pktq->serial)
787         return fp->pos;
788     else
789         return -1;
790 }
791
792 static void decoder_abort(Decoder *d, FrameQueue *fq)
793 {
794     packet_queue_abort(d->queue);
795     frame_queue_signal(fq);
796     SDL_WaitThread(d->decoder_tid, NULL);
797     d->decoder_tid = NULL;
798     packet_queue_flush(d->queue);
799 }
800
801 static inline void fill_rectangle(SDL_Surface *screen,
802                                   int x, int y, int w, int h, int color, int update)
803 {
804     SDL_Rect rect;
805     rect.x = x;
806     rect.y = y;
807     rect.w = w;
808     rect.h = h;
809     SDL_FillRect(screen, &rect, color);
810     if (update && w > 0 && h > 0)
811         SDL_UpdateRect(screen, x, y, w, h);
812 }
813
814 /* draw only the border of a rectangle */
815 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
816 {
817     int w1, w2, h1, h2;
818
819     /* fill the background */
820     w1 = x;
821     if (w1 < 0)
822         w1 = 0;
823     w2 = width - (x + w);
824     if (w2 < 0)
825         w2 = 0;
826     h1 = y;
827     if (h1 < 0)
828         h1 = 0;
829     h2 = height - (y + h);
830     if (h2 < 0)
831         h2 = 0;
832     fill_rectangle(screen,
833                    xleft, ytop,
834                    w1, height,
835                    color, update);
836     fill_rectangle(screen,
837                    xleft + width - w2, ytop,
838                    w2, height,
839                    color, update);
840     fill_rectangle(screen,
841                    xleft + w1, ytop,
842                    width - w1 - w2, h1,
843                    color, update);
844     fill_rectangle(screen,
845                    xleft + w1, ytop + height - h2,
846                    width - w1 - w2, h2,
847                    color, update);
848 }
849
850 #define ALPHA_BLEND(a, oldp, newp, s)\
851 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
852
853
854
855 #define BPP 1
856
857 static void blend_subrect(uint8_t **data, int *linesize, const AVSubtitleRect *rect, int imgw, int imgh)
858 {
859     int x, y, Y, U, V, A;
860     uint8_t *lum, *cb, *cr;
861     int dstx, dsty, dstw, dsth;
862     const AVSubtitleRect *src = rect;
863
864     dstw = av_clip(rect->w, 0, imgw);
865     dsth = av_clip(rect->h, 0, imgh);
866     dstx = av_clip(rect->x, 0, imgw - dstw);
867     dsty = av_clip(rect->y, 0, imgh - dsth);
868     lum = data[0] + dstx + dsty * linesize[0];
869     cb  = data[1] + dstx/2 + (dsty >> 1) * linesize[1];
870     cr  = data[2] + dstx/2 + (dsty >> 1) * linesize[2];
871
872     for (y = 0; y<dsth; y++) {
873         for (x = 0; x<dstw; x++) {
874             Y = src->data[0][x + y*src->linesize[0]];
875             A = src->data[3][x + y*src->linesize[3]];
876             lum[0] = ALPHA_BLEND(A, lum[0], Y, 0);
877             lum++;
878         }
879         lum += linesize[0] - dstw;
880     }
881
882     for (y = 0; y<dsth/2; y++) {
883         for (x = 0; x<dstw/2; x++) {
884             U = src->data[1][x + y*src->linesize[1]];
885             V = src->data[2][x + y*src->linesize[2]];
886             A = src->data[3][2*x     +  2*y   *src->linesize[3]]
887               + src->data[3][2*x + 1 +  2*y   *src->linesize[3]]
888               + src->data[3][2*x + 1 + (2*y+1)*src->linesize[3]]
889               + src->data[3][2*x     + (2*y+1)*src->linesize[3]];
890             cb[0] = ALPHA_BLEND(A>>2, cb[0], U, 0);
891             cr[0] = ALPHA_BLEND(A>>2, cr[0], V, 0);
892             cb++;
893             cr++;
894         }
895         cb += linesize[1] - dstw/2;
896         cr += linesize[2] - dstw/2;
897     }
898 }
899
900 static void free_picture(Frame *vp)
901 {
902      if (vp->bmp) {
903          SDL_FreeYUVOverlay(vp->bmp);
904          vp->bmp = NULL;
905      }
906 }
907
908 static void calculate_display_rect(SDL_Rect *rect,
909                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
910                                    int pic_width, int pic_height, AVRational pic_sar)
911 {
912     float aspect_ratio;
913     int width, height, x, y;
914
915     if (pic_sar.num == 0)
916         aspect_ratio = 0;
917     else
918         aspect_ratio = av_q2d(pic_sar);
919
920     if (aspect_ratio <= 0.0)
921         aspect_ratio = 1.0;
922     aspect_ratio *= (float)pic_width / (float)pic_height;
923
924     /* XXX: we suppose the screen has a 1.0 pixel ratio */
925     height = scr_height;
926     width = lrint(height * aspect_ratio) & ~1;
927     if (width > scr_width) {
928         width = scr_width;
929         height = lrint(width / aspect_ratio) & ~1;
930     }
931     x = (scr_width - width) / 2;
932     y = (scr_height - height) / 2;
933     rect->x = scr_xleft + x;
934     rect->y = scr_ytop  + y;
935     rect->w = FFMAX(width,  1);
936     rect->h = FFMAX(height, 1);
937 }
938
939 static void video_image_display(VideoState *is)
940 {
941     Frame *vp;
942     Frame *sp;
943     SDL_Rect rect;
944     int i;
945
946     vp = frame_queue_peek_last(&is->pictq);
947     if (vp->bmp) {
948         if (is->subtitle_st) {
949             if (frame_queue_nb_remaining(&is->subpq) > 0) {
950                 sp = frame_queue_peek(&is->subpq);
951
952                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
953                     uint8_t *data[4];
954                     int linesize[4];
955
956                     SDL_LockYUVOverlay (vp->bmp);
957
958                     data[0] = vp->bmp->pixels[0];
959                     data[1] = vp->bmp->pixels[2];
960                     data[2] = vp->bmp->pixels[1];
961
962                     linesize[0] = vp->bmp->pitches[0];
963                     linesize[1] = vp->bmp->pitches[2];
964                     linesize[2] = vp->bmp->pitches[1];
965
966                     for (i = 0; i < sp->sub.num_rects; i++)
967                         blend_subrect(data, linesize, sp->subrects[i],
968                                       vp->bmp->w, vp->bmp->h);
969
970                     SDL_UnlockYUVOverlay (vp->bmp);
971                 }
972             }
973         }
974
975         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
976
977         SDL_DisplayYUVOverlay(vp->bmp, &rect);
978
979         if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
980             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
981             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
982             is->last_display_rect = rect;
983         }
984     }
985 }
986
987 static inline int compute_mod(int a, int b)
988 {
989     return a < 0 ? a%b + b : a%b;
990 }
991
992 static void video_audio_display(VideoState *s)
993 {
994     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
995     int ch, channels, h, h2, bgcolor, fgcolor;
996     int64_t time_diff;
997     int rdft_bits, nb_freq;
998
999     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1000         ;
1001     nb_freq = 1 << (rdft_bits - 1);
1002
1003     /* compute display index : center on currently output samples */
1004     channels = s->audio_tgt.channels;
1005     nb_display_channels = channels;
1006     if (!s->paused) {
1007         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1008         n = 2 * channels;
1009         delay = s->audio_write_buf_size;
1010         delay /= n;
1011
1012         /* to be more precise, we take into account the time spent since
1013            the last buffer computation */
1014         if (audio_callback_time) {
1015             time_diff = av_gettime_relative() - audio_callback_time;
1016             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1017         }
1018
1019         delay += 2 * data_used;
1020         if (delay < data_used)
1021             delay = data_used;
1022
1023         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1024         if (s->show_mode == SHOW_MODE_WAVES) {
1025             h = INT_MIN;
1026             for (i = 0; i < 1000; i += channels) {
1027                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1028                 int a = s->sample_array[idx];
1029                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1030                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1031                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1032                 int score = a - d;
1033                 if (h < score && (b ^ c) < 0) {
1034                     h = score;
1035                     i_start = idx;
1036                 }
1037             }
1038         }
1039
1040         s->last_i_start = i_start;
1041     } else {
1042         i_start = s->last_i_start;
1043     }
1044
1045     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1046     if (s->show_mode == SHOW_MODE_WAVES) {
1047         fill_rectangle(screen,
1048                        s->xleft, s->ytop, s->width, s->height,
1049                        bgcolor, 0);
1050
1051         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
1052
1053         /* total height for one channel */
1054         h = s->height / nb_display_channels;
1055         /* graph height / 2 */
1056         h2 = (h * 9) / 20;
1057         for (ch = 0; ch < nb_display_channels; ch++) {
1058             i = i_start + ch;
1059             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1060             for (x = 0; x < s->width; x++) {
1061                 y = (s->sample_array[i] * h2) >> 15;
1062                 if (y < 0) {
1063                     y = -y;
1064                     ys = y1 - y;
1065                 } else {
1066                     ys = y1;
1067                 }
1068                 fill_rectangle(screen,
1069                                s->xleft + x, ys, 1, y,
1070                                fgcolor, 0);
1071                 i += channels;
1072                 if (i >= SAMPLE_ARRAY_SIZE)
1073                     i -= SAMPLE_ARRAY_SIZE;
1074             }
1075         }
1076
1077         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
1078
1079         for (ch = 1; ch < nb_display_channels; ch++) {
1080             y = s->ytop + ch * h;
1081             fill_rectangle(screen,
1082                            s->xleft, y, s->width, 1,
1083                            fgcolor, 0);
1084         }
1085         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
1086     } else {
1087         nb_display_channels= FFMIN(nb_display_channels, 2);
1088         if (rdft_bits != s->rdft_bits) {
1089             av_rdft_end(s->rdft);
1090             av_free(s->rdft_data);
1091             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1092             s->rdft_bits = rdft_bits;
1093             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1094         }
1095         if (!s->rdft || !s->rdft_data){
1096             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1097             s->show_mode = SHOW_MODE_WAVES;
1098         } else {
1099             FFTSample *data[2];
1100             for (ch = 0; ch < nb_display_channels; ch++) {
1101                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1102                 i = i_start + ch;
1103                 for (x = 0; x < 2 * nb_freq; x++) {
1104                     double w = (x-nb_freq) * (1.0 / nb_freq);
1105                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1106                     i += channels;
1107                     if (i >= SAMPLE_ARRAY_SIZE)
1108                         i -= SAMPLE_ARRAY_SIZE;
1109                 }
1110                 av_rdft_calc(s->rdft, data[ch]);
1111             }
1112             /* Least efficient way to do this, we should of course
1113              * directly access it but it is more than fast enough. */
1114             for (y = 0; y < s->height; y++) {
1115                 double w = 1 / sqrt(nb_freq);
1116                 int a = sqrt(w * hypot(data[0][2 * y + 0], data[0][2 * y + 1]));
1117                 int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
1118                                                     : a;
1119                 a = FFMIN(a, 255);
1120                 b = FFMIN(b, 255);
1121                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1122
1123                 fill_rectangle(screen,
1124                             s->xpos, s->height-y, 1, 1,
1125                             fgcolor, 0);
1126             }
1127         }
1128         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1129         if (!s->paused)
1130             s->xpos++;
1131         if (s->xpos >= s->width)
1132             s->xpos= s->xleft;
1133     }
1134 }
1135
1136 static void stream_component_close(VideoState *is, int stream_index)
1137 {
1138     AVFormatContext *ic = is->ic;
1139     AVCodecParameters *codecpar;
1140
1141     if (stream_index < 0 || stream_index >= ic->nb_streams)
1142         return;
1143     codecpar = ic->streams[stream_index]->codecpar;
1144
1145     switch (codecpar->codec_type) {
1146     case AVMEDIA_TYPE_AUDIO:
1147         decoder_abort(&is->auddec, &is->sampq);
1148         SDL_CloseAudio();
1149         decoder_destroy(&is->auddec);
1150         swr_free(&is->swr_ctx);
1151         av_freep(&is->audio_buf1);
1152         is->audio_buf1_size = 0;
1153         is->audio_buf = NULL;
1154
1155         if (is->rdft) {
1156             av_rdft_end(is->rdft);
1157             av_freep(&is->rdft_data);
1158             is->rdft = NULL;
1159             is->rdft_bits = 0;
1160         }
1161         break;
1162     case AVMEDIA_TYPE_VIDEO:
1163         decoder_abort(&is->viddec, &is->pictq);
1164         decoder_destroy(&is->viddec);
1165         break;
1166     case AVMEDIA_TYPE_SUBTITLE:
1167         decoder_abort(&is->subdec, &is->subpq);
1168         decoder_destroy(&is->subdec);
1169         break;
1170     default:
1171         break;
1172     }
1173
1174     ic->streams[stream_index]->discard = AVDISCARD_ALL;
1175     switch (codecpar->codec_type) {
1176     case AVMEDIA_TYPE_AUDIO:
1177         is->audio_st = NULL;
1178         is->audio_stream = -1;
1179         break;
1180     case AVMEDIA_TYPE_VIDEO:
1181         is->video_st = NULL;
1182         is->video_stream = -1;
1183         break;
1184     case AVMEDIA_TYPE_SUBTITLE:
1185         is->subtitle_st = NULL;
1186         is->subtitle_stream = -1;
1187         break;
1188     default:
1189         break;
1190     }
1191 }
1192
1193 static void stream_close(VideoState *is)
1194 {
1195     /* XXX: use a special url_shutdown call to abort parse cleanly */
1196     is->abort_request = 1;
1197     SDL_WaitThread(is->read_tid, NULL);
1198
1199     /* close each stream */
1200     if (is->audio_stream >= 0)
1201         stream_component_close(is, is->audio_stream);
1202     if (is->video_stream >= 0)
1203         stream_component_close(is, is->video_stream);
1204     if (is->subtitle_stream >= 0)
1205         stream_component_close(is, is->subtitle_stream);
1206
1207     avformat_close_input(&is->ic);
1208
1209     packet_queue_destroy(&is->videoq);
1210     packet_queue_destroy(&is->audioq);
1211     packet_queue_destroy(&is->subtitleq);
1212
1213     /* free all pictures */
1214     frame_queue_destory(&is->pictq);
1215     frame_queue_destory(&is->sampq);
1216     frame_queue_destory(&is->subpq);
1217     SDL_DestroyCond(is->continue_read_thread);
1218 #if !CONFIG_AVFILTER
1219     sws_freeContext(is->img_convert_ctx);
1220 #endif
1221     sws_freeContext(is->sub_convert_ctx);
1222     av_free(is->filename);
1223     av_free(is);
1224 }
1225
1226 static void do_exit(VideoState *is)
1227 {
1228     if (is) {
1229         stream_close(is);
1230     }
1231     av_lockmgr_register(NULL);
1232     uninit_opts();
1233 #if CONFIG_AVFILTER
1234     av_freep(&vfilters_list);
1235 #endif
1236     avformat_network_deinit();
1237     if (show_status)
1238         printf("\n");
1239     SDL_Quit();
1240     av_log(NULL, AV_LOG_QUIET, "%s", "");
1241     exit(0);
1242 }
1243
1244 static void sigterm_handler(int sig)
1245 {
1246     exit(123);
1247 }
1248
1249 static void set_default_window_size(int width, int height, AVRational sar)
1250 {
1251     SDL_Rect rect;
1252     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1253     default_width  = rect.w;
1254     default_height = rect.h;
1255 }
1256
1257 static int video_open(VideoState *is, int force_set_video_mode, Frame *vp)
1258 {
1259     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1260     int w,h;
1261
1262     if (is_full_screen) flags |= SDL_FULLSCREEN;
1263     else                flags |= SDL_RESIZABLE;
1264
1265     if (vp && vp->width)
1266         set_default_window_size(vp->width, vp->height, vp->sar);
1267
1268     if (is_full_screen && fs_screen_width) {
1269         w = fs_screen_width;
1270         h = fs_screen_height;
1271     } else if (!is_full_screen && screen_width) {
1272         w = screen_width;
1273         h = screen_height;
1274     } else {
1275         w = default_width;
1276         h = default_height;
1277     }
1278     w = FFMIN(16383, w);
1279     if (screen && is->width == screen->w && screen->w == w
1280        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1281         return 0;
1282     screen = SDL_SetVideoMode(w, h, 0, flags);
1283     if (!screen) {
1284         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1285         do_exit(is);
1286     }
1287     if (!window_title)
1288         window_title = input_filename;
1289     SDL_WM_SetCaption(window_title, window_title);
1290
1291     is->width  = screen->w;
1292     is->height = screen->h;
1293
1294     return 0;
1295 }
1296
1297 /* display the current picture, if any */
1298 static void video_display(VideoState *is)
1299 {
1300     if (!screen)
1301         video_open(is, 0, NULL);
1302     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1303         video_audio_display(is);
1304     else if (is->video_st)
1305         video_image_display(is);
1306 }
1307
1308 static double get_clock(Clock *c)
1309 {
1310     if (*c->queue_serial != c->serial)
1311         return NAN;
1312     if (c->paused) {
1313         return c->pts;
1314     } else {
1315         double time = av_gettime_relative() / 1000000.0;
1316         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1317     }
1318 }
1319
1320 static void set_clock_at(Clock *c, double pts, int serial, double time)
1321 {
1322     c->pts = pts;
1323     c->last_updated = time;
1324     c->pts_drift = c->pts - time;
1325     c->serial = serial;
1326 }
1327
1328 static void set_clock(Clock *c, double pts, int serial)
1329 {
1330     double time = av_gettime_relative() / 1000000.0;
1331     set_clock_at(c, pts, serial, time);
1332 }
1333
1334 static void set_clock_speed(Clock *c, double speed)
1335 {
1336     set_clock(c, get_clock(c), c->serial);
1337     c->speed = speed;
1338 }
1339
1340 static void init_clock(Clock *c, int *queue_serial)
1341 {
1342     c->speed = 1.0;
1343     c->paused = 0;
1344     c->queue_serial = queue_serial;
1345     set_clock(c, NAN, -1);
1346 }
1347
1348 static void sync_clock_to_slave(Clock *c, Clock *slave)
1349 {
1350     double clock = get_clock(c);
1351     double slave_clock = get_clock(slave);
1352     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1353         set_clock(c, slave_clock, slave->serial);
1354 }
1355
1356 static int get_master_sync_type(VideoState *is) {
1357     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1358         if (is->video_st)
1359             return AV_SYNC_VIDEO_MASTER;
1360         else
1361             return AV_SYNC_AUDIO_MASTER;
1362     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1363         if (is->audio_st)
1364             return AV_SYNC_AUDIO_MASTER;
1365         else
1366             return AV_SYNC_EXTERNAL_CLOCK;
1367     } else {
1368         return AV_SYNC_EXTERNAL_CLOCK;
1369     }
1370 }
1371
1372 /* get the current master clock value */
1373 static double get_master_clock(VideoState *is)
1374 {
1375     double val;
1376
1377     switch (get_master_sync_type(is)) {
1378         case AV_SYNC_VIDEO_MASTER:
1379             val = get_clock(&is->vidclk);
1380             break;
1381         case AV_SYNC_AUDIO_MASTER:
1382             val = get_clock(&is->audclk);
1383             break;
1384         default:
1385             val = get_clock(&is->extclk);
1386             break;
1387     }
1388     return val;
1389 }
1390
1391 static void check_external_clock_speed(VideoState *is) {
1392    if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
1393        is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
1394        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1395    } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
1396               (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
1397        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1398    } else {
1399        double speed = is->extclk.speed;
1400        if (speed != 1.0)
1401            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1402    }
1403 }
1404
1405 /* seek in the stream */
1406 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1407 {
1408     if (!is->seek_req) {
1409         is->seek_pos = pos;
1410         is->seek_rel = rel;
1411         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1412         if (seek_by_bytes)
1413             is->seek_flags |= AVSEEK_FLAG_BYTE;
1414         is->seek_req = 1;
1415         SDL_CondSignal(is->continue_read_thread);
1416     }
1417 }
1418
1419 /* pause or resume the video */
1420 static void stream_toggle_pause(VideoState *is)
1421 {
1422     if (is->paused) {
1423         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1424         if (is->read_pause_return != AVERROR(ENOSYS)) {
1425             is->vidclk.paused = 0;
1426         }
1427         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1428     }
1429     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1430     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1431 }
1432
1433 static void toggle_pause(VideoState *is)
1434 {
1435     stream_toggle_pause(is);
1436     is->step = 0;
1437 }
1438
1439 static void toggle_mute(VideoState *is)
1440 {
1441     is->muted = !is->muted;
1442 }
1443
1444 static void update_volume(VideoState *is, int sign, int step)
1445 {
1446     is->audio_volume = av_clip(is->audio_volume + sign * step, 0, SDL_MIX_MAXVOLUME);
1447 }
1448
1449 static void step_to_next_frame(VideoState *is)
1450 {
1451     /* if the stream is paused unpause it, then step */
1452     if (is->paused)
1453         stream_toggle_pause(is);
1454     is->step = 1;
1455 }
1456
1457 static double compute_target_delay(double delay, VideoState *is)
1458 {
1459     double sync_threshold, diff = 0;
1460
1461     /* update delay to follow master synchronisation source */
1462     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1463         /* if video is slave, we try to correct big delays by
1464            duplicating or deleting a frame */
1465         diff = get_clock(&is->vidclk) - get_master_clock(is);
1466
1467         /* skip or repeat frame. We take into account the
1468            delay to compute the threshold. I still don't know
1469            if it is the best guess */
1470         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1471         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1472             if (diff <= -sync_threshold)
1473                 delay = FFMAX(0, delay + diff);
1474             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1475                 delay = delay + diff;
1476             else if (diff >= sync_threshold)
1477                 delay = 2 * delay;
1478         }
1479     }
1480
1481     av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
1482             delay, -diff);
1483
1484     return delay;
1485 }
1486
1487 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1488     if (vp->serial == nextvp->serial) {
1489         double duration = nextvp->pts - vp->pts;
1490         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1491             return vp->duration;
1492         else
1493             return duration;
1494     } else {
1495         return 0.0;
1496     }
1497 }
1498
1499 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1500     /* update current video pts */
1501     set_clock(&is->vidclk, pts, serial);
1502     sync_clock_to_slave(&is->extclk, &is->vidclk);
1503 }
1504
1505 /* called to display each frame */
1506 static void video_refresh(void *opaque, double *remaining_time)
1507 {
1508     VideoState *is = opaque;
1509     double time;
1510
1511     Frame *sp, *sp2;
1512
1513     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1514         check_external_clock_speed(is);
1515
1516     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1517         time = av_gettime_relative() / 1000000.0;
1518         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1519             video_display(is);
1520             is->last_vis_time = time;
1521         }
1522         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1523     }
1524
1525     if (is->video_st) {
1526 retry:
1527         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1528             // nothing to do, no picture to display in the queue
1529         } else {
1530             double last_duration, duration, delay;
1531             Frame *vp, *lastvp;
1532
1533             /* dequeue the picture */
1534             lastvp = frame_queue_peek_last(&is->pictq);
1535             vp = frame_queue_peek(&is->pictq);
1536
1537             if (vp->serial != is->videoq.serial) {
1538                 frame_queue_next(&is->pictq);
1539                 goto retry;
1540             }
1541
1542             if (lastvp->serial != vp->serial)
1543                 is->frame_timer = av_gettime_relative() / 1000000.0;
1544
1545             if (is->paused)
1546                 goto display;
1547
1548             /* compute nominal last_duration */
1549             last_duration = vp_duration(is, lastvp, vp);
1550             delay = compute_target_delay(last_duration, is);
1551
1552             time= av_gettime_relative()/1000000.0;
1553             if (time < is->frame_timer + delay) {
1554                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1555                 goto display;
1556             }
1557
1558             is->frame_timer += delay;
1559             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1560                 is->frame_timer = time;
1561
1562             SDL_LockMutex(is->pictq.mutex);
1563             if (!isnan(vp->pts))
1564                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1565             SDL_UnlockMutex(is->pictq.mutex);
1566
1567             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1568                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1569                 duration = vp_duration(is, vp, nextvp);
1570                 if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1571                     is->frame_drops_late++;
1572                     frame_queue_next(&is->pictq);
1573                     goto retry;
1574                 }
1575             }
1576
1577             if (is->subtitle_st) {
1578                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1579                         sp = frame_queue_peek(&is->subpq);
1580
1581                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1582                             sp2 = frame_queue_peek_next(&is->subpq);
1583                         else
1584                             sp2 = NULL;
1585
1586                         if (sp->serial != is->subtitleq.serial
1587                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1588                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1589                         {
1590                             frame_queue_next(&is->subpq);
1591                         } else {
1592                             break;
1593                         }
1594                     }
1595             }
1596
1597             frame_queue_next(&is->pictq);
1598             is->force_refresh = 1;
1599
1600             if (is->step && !is->paused)
1601                 stream_toggle_pause(is);
1602         }
1603 display:
1604         /* display picture */
1605         if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
1606             video_display(is);
1607     }
1608     is->force_refresh = 0;
1609     if (show_status) {
1610         static int64_t last_time;
1611         int64_t cur_time;
1612         int aqsize, vqsize, sqsize;
1613         double av_diff;
1614
1615         cur_time = av_gettime_relative();
1616         if (!last_time || (cur_time - last_time) >= 30000) {
1617             aqsize = 0;
1618             vqsize = 0;
1619             sqsize = 0;
1620             if (is->audio_st)
1621                 aqsize = is->audioq.size;
1622             if (is->video_st)
1623                 vqsize = is->videoq.size;
1624             if (is->subtitle_st)
1625                 sqsize = is->subtitleq.size;
1626             av_diff = 0;
1627             if (is->audio_st && is->video_st)
1628                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1629             else if (is->video_st)
1630                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1631             else if (is->audio_st)
1632                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1633             av_log(NULL, AV_LOG_INFO,
1634                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1635                    get_master_clock(is),
1636                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1637                    av_diff,
1638                    is->frame_drops_early + is->frame_drops_late,
1639                    aqsize / 1024,
1640                    vqsize / 1024,
1641                    sqsize,
1642                    is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
1643                    is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
1644             fflush(stdout);
1645             last_time = cur_time;
1646         }
1647     }
1648 }
1649
1650 /* allocate a picture (needs to do that in main thread to avoid
1651    potential locking problems */
1652 static void alloc_picture(VideoState *is)
1653 {
1654     Frame *vp;
1655     int64_t bufferdiff;
1656
1657     vp = &is->pictq.queue[is->pictq.windex];
1658
1659     free_picture(vp);
1660
1661     video_open(is, 0, vp);
1662
1663     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1664                                    SDL_YV12_OVERLAY,
1665                                    screen);
1666     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1667     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1668         /* SDL allocates a buffer smaller than requested if the video
1669          * overlay hardware is unable to support the requested size. */
1670         av_log(NULL, AV_LOG_FATAL,
1671                "Error: the video system does not support an image\n"
1672                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1673                         "to reduce the image size.\n", vp->width, vp->height );
1674         do_exit(is);
1675     }
1676
1677     SDL_LockMutex(is->pictq.mutex);
1678     vp->allocated = 1;
1679     SDL_CondSignal(is->pictq.cond);
1680     SDL_UnlockMutex(is->pictq.mutex);
1681 }
1682
1683 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1684     int i, width, height;
1685     Uint8 *p, *maxp;
1686     for (i = 0; i < 3; i++) {
1687         width  = bmp->w;
1688         height = bmp->h;
1689         if (i > 0) {
1690             width  >>= 1;
1691             height >>= 1;
1692         }
1693         if (bmp->pitches[i] > width) {
1694             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1695             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1696                 *(p+1) = *p;
1697         }
1698     }
1699 }
1700
1701 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1702 {
1703     Frame *vp;
1704
1705 #if defined(DEBUG_SYNC)
1706     printf("frame_type=%c pts=%0.3f\n",
1707            av_get_picture_type_char(src_frame->pict_type), pts);
1708 #endif
1709
1710     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1711         return -1;
1712
1713     vp->sar = src_frame->sample_aspect_ratio;
1714
1715     /* alloc or resize hardware picture buffer */
1716     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1717         vp->width  != src_frame->width ||
1718         vp->height != src_frame->height) {
1719         SDL_Event event;
1720
1721         vp->allocated  = 0;
1722         vp->reallocate = 0;
1723         vp->width = src_frame->width;
1724         vp->height = src_frame->height;
1725
1726         /* the allocation must be done in the main thread to avoid
1727            locking problems. */
1728         event.type = FF_ALLOC_EVENT;
1729         event.user.data1 = is;
1730         SDL_PushEvent(&event);
1731
1732         /* wait until the picture is allocated */
1733         SDL_LockMutex(is->pictq.mutex);
1734         while (!vp->allocated && !is->videoq.abort_request) {
1735             SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1736         }
1737         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1738         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1739             while (!vp->allocated && !is->abort_request) {
1740                 SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1741             }
1742         }
1743         SDL_UnlockMutex(is->pictq.mutex);
1744
1745         if (is->videoq.abort_request)
1746             return -1;
1747     }
1748
1749     /* if the frame is not skipped, then display it */
1750     if (vp->bmp) {
1751         uint8_t *data[4];
1752         int linesize[4];
1753
1754         /* get a pointer on the bitmap */
1755         SDL_LockYUVOverlay (vp->bmp);
1756
1757         data[0] = vp->bmp->pixels[0];
1758         data[1] = vp->bmp->pixels[2];
1759         data[2] = vp->bmp->pixels[1];
1760
1761         linesize[0] = vp->bmp->pitches[0];
1762         linesize[1] = vp->bmp->pitches[2];
1763         linesize[2] = vp->bmp->pitches[1];
1764
1765 #if CONFIG_AVFILTER
1766         // FIXME use direct rendering
1767         av_image_copy(data, linesize, (const uint8_t **)src_frame->data, src_frame->linesize,
1768                         src_frame->format, vp->width, vp->height);
1769 #else
1770         {
1771             AVDictionaryEntry *e = av_dict_get(sws_dict, "sws_flags", NULL, 0);
1772             if (e) {
1773                 const AVClass *class = sws_get_class();
1774                 const AVOption    *o = av_opt_find(&class, "sws_flags", NULL, 0,
1775                                                    AV_OPT_SEARCH_FAKE_OBJ);
1776                 int ret = av_opt_eval_flags(&class, o, e->value, &sws_flags);
1777                 if (ret < 0)
1778                     exit(1);
1779             }
1780         }
1781
1782         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1783             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1784             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1785         if (!is->img_convert_ctx) {
1786             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1787             exit(1);
1788         }
1789         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1790                   0, vp->height, data, linesize);
1791 #endif
1792         /* workaround SDL PITCH_WORKAROUND */
1793         duplicate_right_border_pixels(vp->bmp);
1794         /* update the bitmap content */
1795         SDL_UnlockYUVOverlay(vp->bmp);
1796
1797         vp->pts = pts;
1798         vp->duration = duration;
1799         vp->pos = pos;
1800         vp->serial = serial;
1801
1802         /* now we can update the picture count */
1803         frame_queue_push(&is->pictq);
1804     }
1805     return 0;
1806 }
1807
1808 static int get_video_frame(VideoState *is, AVFrame *frame)
1809 {
1810     int got_picture;
1811
1812     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1813         return -1;
1814
1815     if (got_picture) {
1816         double dpts = NAN;
1817
1818         if (frame->pts != AV_NOPTS_VALUE)
1819             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1820
1821         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1822
1823         is->viddec_width  = frame->width;
1824         is->viddec_height = frame->height;
1825
1826         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1827             if (frame->pts != AV_NOPTS_VALUE) {
1828                 double diff = dpts - get_master_clock(is);
1829                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1830                     diff - is->frame_last_filter_delay < 0 &&
1831                     is->viddec.pkt_serial == is->vidclk.serial &&
1832                     is->videoq.nb_packets) {
1833                     is->frame_drops_early++;
1834                     av_frame_unref(frame);
1835                     got_picture = 0;
1836                 }
1837             }
1838         }
1839     }
1840
1841     return got_picture;
1842 }
1843
1844 #if CONFIG_AVFILTER
1845 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1846                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1847 {
1848     int ret, i;
1849     int nb_filters = graph->nb_filters;
1850     AVFilterInOut *outputs = NULL, *inputs = NULL;
1851
1852     if (filtergraph) {
1853         outputs = avfilter_inout_alloc();
1854         inputs  = avfilter_inout_alloc();
1855         if (!outputs || !inputs) {
1856             ret = AVERROR(ENOMEM);
1857             goto fail;
1858         }
1859
1860         outputs->name       = av_strdup("in");
1861         outputs->filter_ctx = source_ctx;
1862         outputs->pad_idx    = 0;
1863         outputs->next       = NULL;
1864
1865         inputs->name        = av_strdup("out");
1866         inputs->filter_ctx  = sink_ctx;
1867         inputs->pad_idx     = 0;
1868         inputs->next        = NULL;
1869
1870         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1871             goto fail;
1872     } else {
1873         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1874             goto fail;
1875     }
1876
1877     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1878     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1879         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1880
1881     ret = avfilter_graph_config(graph, NULL);
1882 fail:
1883     avfilter_inout_free(&outputs);
1884     avfilter_inout_free(&inputs);
1885     return ret;
1886 }
1887
1888 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1889 {
1890     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1891     char sws_flags_str[512] = "";
1892     char buffersrc_args[256];
1893     int ret;
1894     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1895     AVCodecParameters *codecpar = is->video_st->codecpar;
1896     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1897     AVDictionaryEntry *e = NULL;
1898
1899     while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
1900         if (!strcmp(e->key, "sws_flags")) {
1901             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
1902         } else
1903             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
1904     }
1905     if (strlen(sws_flags_str))
1906         sws_flags_str[strlen(sws_flags_str)-1] = '\0';
1907
1908     graph->scale_sws_opts = av_strdup(sws_flags_str);
1909
1910     snprintf(buffersrc_args, sizeof(buffersrc_args),
1911              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1912              frame->width, frame->height, frame->format,
1913              is->video_st->time_base.num, is->video_st->time_base.den,
1914              codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
1915     if (fr.num && fr.den)
1916         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1917
1918     if ((ret = avfilter_graph_create_filter(&filt_src,
1919                                             avfilter_get_by_name("buffer"),
1920                                             "ffplay_buffer", buffersrc_args, NULL,
1921                                             graph)) < 0)
1922         goto fail;
1923
1924     ret = avfilter_graph_create_filter(&filt_out,
1925                                        avfilter_get_by_name("buffersink"),
1926                                        "ffplay_buffersink", NULL, NULL, graph);
1927     if (ret < 0)
1928         goto fail;
1929
1930     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1931         goto fail;
1932
1933     last_filter = filt_out;
1934
1935 /* Note: this macro adds a filter before the lastly added filter, so the
1936  * processing order of the filters is in reverse */
1937 #define INSERT_FILT(name, arg) do {                                          \
1938     AVFilterContext *filt_ctx;                                               \
1939                                                                              \
1940     ret = avfilter_graph_create_filter(&filt_ctx,                            \
1941                                        avfilter_get_by_name(name),           \
1942                                        "ffplay_" name, arg, NULL, graph);    \
1943     if (ret < 0)                                                             \
1944         goto fail;                                                           \
1945                                                                              \
1946     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
1947     if (ret < 0)                                                             \
1948         goto fail;                                                           \
1949                                                                              \
1950     last_filter = filt_ctx;                                                  \
1951 } while (0)
1952
1953     /* SDL YUV code is not handling odd width/height for some driver
1954      * combinations, therefore we crop the picture to an even width/height. */
1955     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
1956
1957     if (autorotate) {
1958         double theta  = get_rotation(is->video_st);
1959
1960         if (fabs(theta - 90) < 1.0) {
1961             INSERT_FILT("transpose", "clock");
1962         } else if (fabs(theta - 180) < 1.0) {
1963             INSERT_FILT("hflip", NULL);
1964             INSERT_FILT("vflip", NULL);
1965         } else if (fabs(theta - 270) < 1.0) {
1966             INSERT_FILT("transpose", "cclock");
1967         } else if (fabs(theta) > 1.0) {
1968             char rotate_buf[64];
1969             snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
1970             INSERT_FILT("rotate", rotate_buf);
1971         }
1972     }
1973
1974     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1975         goto fail;
1976
1977     is->in_video_filter  = filt_src;
1978     is->out_video_filter = filt_out;
1979
1980 fail:
1981     return ret;
1982 }
1983
1984 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1985 {
1986     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1987     int sample_rates[2] = { 0, -1 };
1988     int64_t channel_layouts[2] = { 0, -1 };
1989     int channels[2] = { 0, -1 };
1990     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1991     char aresample_swr_opts[512] = "";
1992     AVDictionaryEntry *e = NULL;
1993     char asrc_args[256];
1994     int ret;
1995
1996     avfilter_graph_free(&is->agraph);
1997     if (!(is->agraph = avfilter_graph_alloc()))
1998         return AVERROR(ENOMEM);
1999
2000     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
2001         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
2002     if (strlen(aresample_swr_opts))
2003         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
2004     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
2005
2006     ret = snprintf(asrc_args, sizeof(asrc_args),
2007                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
2008                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
2009                    is->audio_filter_src.channels,
2010                    1, is->audio_filter_src.freq);
2011     if (is->audio_filter_src.channel_layout)
2012         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
2013                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
2014
2015     ret = avfilter_graph_create_filter(&filt_asrc,
2016                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
2017                                        asrc_args, NULL, is->agraph);
2018     if (ret < 0)
2019         goto end;
2020
2021
2022     ret = avfilter_graph_create_filter(&filt_asink,
2023                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
2024                                        NULL, NULL, is->agraph);
2025     if (ret < 0)
2026         goto end;
2027
2028     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2029         goto end;
2030     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2031         goto end;
2032
2033     if (force_output_format) {
2034         channel_layouts[0] = is->audio_tgt.channel_layout;
2035         channels       [0] = is->audio_tgt.channels;
2036         sample_rates   [0] = is->audio_tgt.freq;
2037         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2038             goto end;
2039         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2040             goto end;
2041         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2042             goto end;
2043         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2044             goto end;
2045     }
2046
2047
2048     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2049         goto end;
2050
2051     is->in_audio_filter  = filt_asrc;
2052     is->out_audio_filter = filt_asink;
2053
2054 end:
2055     if (ret < 0)
2056         avfilter_graph_free(&is->agraph);
2057     return ret;
2058 }
2059 #endif  /* CONFIG_AVFILTER */
2060
2061 static int audio_thread(void *arg)
2062 {
2063     VideoState *is = arg;
2064     AVFrame *frame = av_frame_alloc();
2065     Frame *af;
2066 #if CONFIG_AVFILTER
2067     int last_serial = -1;
2068     int64_t dec_channel_layout;
2069     int reconfigure;
2070 #endif
2071     int got_frame = 0;
2072     AVRational tb;
2073     int ret = 0;
2074
2075     if (!frame)
2076         return AVERROR(ENOMEM);
2077
2078     do {
2079         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2080             goto the_end;
2081
2082         if (got_frame) {
2083                 tb = (AVRational){1, frame->sample_rate};
2084
2085 #if CONFIG_AVFILTER
2086                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, av_frame_get_channels(frame));
2087
2088                 reconfigure =
2089                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2090                                    frame->format, av_frame_get_channels(frame))    ||
2091                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2092                     is->audio_filter_src.freq           != frame->sample_rate ||
2093                     is->auddec.pkt_serial               != last_serial;
2094
2095                 if (reconfigure) {
2096                     char buf1[1024], buf2[1024];
2097                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2098                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2099                     av_log(NULL, AV_LOG_DEBUG,
2100                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2101                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2102                            frame->sample_rate, av_frame_get_channels(frame), av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2103
2104                     is->audio_filter_src.fmt            = frame->format;
2105                     is->audio_filter_src.channels       = av_frame_get_channels(frame);
2106                     is->audio_filter_src.channel_layout = dec_channel_layout;
2107                     is->audio_filter_src.freq           = frame->sample_rate;
2108                     last_serial                         = is->auddec.pkt_serial;
2109
2110                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2111                         goto the_end;
2112                 }
2113
2114             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2115                 goto the_end;
2116
2117             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2118                 tb = is->out_audio_filter->inputs[0]->time_base;
2119 #endif
2120                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2121                     goto the_end;
2122
2123                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2124                 af->pos = av_frame_get_pkt_pos(frame);
2125                 af->serial = is->auddec.pkt_serial;
2126                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2127
2128                 av_frame_move_ref(af->frame, frame);
2129                 frame_queue_push(&is->sampq);
2130
2131 #if CONFIG_AVFILTER
2132                 if (is->audioq.serial != is->auddec.pkt_serial)
2133                     break;
2134             }
2135             if (ret == AVERROR_EOF)
2136                 is->auddec.finished = is->auddec.pkt_serial;
2137 #endif
2138         }
2139     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2140  the_end:
2141 #if CONFIG_AVFILTER
2142     avfilter_graph_free(&is->agraph);
2143 #endif
2144     av_frame_free(&frame);
2145     return ret;
2146 }
2147
2148 static int decoder_start(Decoder *d, int (*fn)(void *), void *arg)
2149 {
2150     packet_queue_start(d->queue);
2151     d->decoder_tid = SDL_CreateThread(fn, arg);
2152     if (!d->decoder_tid) {
2153         av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
2154         return AVERROR(ENOMEM);
2155     }
2156     return 0;
2157 }
2158
2159 static int video_thread(void *arg)
2160 {
2161     VideoState *is = arg;
2162     AVFrame *frame = av_frame_alloc();
2163     double pts;
2164     double duration;
2165     int ret;
2166     AVRational tb = is->video_st->time_base;
2167     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2168
2169 #if CONFIG_AVFILTER
2170     AVFilterGraph *graph = avfilter_graph_alloc();
2171     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2172     int last_w = 0;
2173     int last_h = 0;
2174     enum AVPixelFormat last_format = -2;
2175     int last_serial = -1;
2176     int last_vfilter_idx = 0;
2177     if (!graph) {
2178         av_frame_free(&frame);
2179         return AVERROR(ENOMEM);
2180     }
2181
2182 #endif
2183
2184     if (!frame) {
2185 #if CONFIG_AVFILTER
2186         avfilter_graph_free(&graph);
2187 #endif
2188         return AVERROR(ENOMEM);
2189     }
2190
2191     for (;;) {
2192         ret = get_video_frame(is, frame);
2193         if (ret < 0)
2194             goto the_end;
2195         if (!ret)
2196             continue;
2197
2198 #if CONFIG_AVFILTER
2199         if (   last_w != frame->width
2200             || last_h != frame->height
2201             || last_format != frame->format
2202             || last_serial != is->viddec.pkt_serial
2203             || last_vfilter_idx != is->vfilter_idx) {
2204             av_log(NULL, AV_LOG_DEBUG,
2205                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2206                    last_w, last_h,
2207                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2208                    frame->width, frame->height,
2209                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2210             avfilter_graph_free(&graph);
2211             graph = avfilter_graph_alloc();
2212             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2213                 SDL_Event event;
2214                 event.type = FF_QUIT_EVENT;
2215                 event.user.data1 = is;
2216                 SDL_PushEvent(&event);
2217                 goto the_end;
2218             }
2219             filt_in  = is->in_video_filter;
2220             filt_out = is->out_video_filter;
2221             last_w = frame->width;
2222             last_h = frame->height;
2223             last_format = frame->format;
2224             last_serial = is->viddec.pkt_serial;
2225             last_vfilter_idx = is->vfilter_idx;
2226             frame_rate = filt_out->inputs[0]->frame_rate;
2227         }
2228
2229         ret = av_buffersrc_add_frame(filt_in, frame);
2230         if (ret < 0)
2231             goto the_end;
2232
2233         while (ret >= 0) {
2234             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2235
2236             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2237             if (ret < 0) {
2238                 if (ret == AVERROR_EOF)
2239                     is->viddec.finished = is->viddec.pkt_serial;
2240                 ret = 0;
2241                 break;
2242             }
2243
2244             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2245             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2246                 is->frame_last_filter_delay = 0;
2247             tb = filt_out->inputs[0]->time_base;
2248 #endif
2249             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2250             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2251             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), is->viddec.pkt_serial);
2252             av_frame_unref(frame);
2253 #if CONFIG_AVFILTER
2254         }
2255 #endif
2256
2257         if (ret < 0)
2258             goto the_end;
2259     }
2260  the_end:
2261 #if CONFIG_AVFILTER
2262     avfilter_graph_free(&graph);
2263 #endif
2264     av_frame_free(&frame);
2265     return 0;
2266 }
2267
2268 static int subtitle_thread(void *arg)
2269 {
2270     VideoState *is = arg;
2271     Frame *sp;
2272     int got_subtitle;
2273     double pts;
2274     int i;
2275
2276     for (;;) {
2277         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2278             return 0;
2279
2280         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2281             break;
2282
2283         pts = 0;
2284
2285         if (got_subtitle && sp->sub.format == 0) {
2286             if (sp->sub.pts != AV_NOPTS_VALUE)
2287                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2288             sp->pts = pts;
2289             sp->serial = is->subdec.pkt_serial;
2290             if (!(sp->subrects = av_mallocz_array(sp->sub.num_rects, sizeof(AVSubtitleRect*)))) {
2291                 av_log(NULL, AV_LOG_FATAL, "Cannot allocate subrects\n");
2292                 exit(1);
2293             }
2294
2295             for (i = 0; i < sp->sub.num_rects; i++)
2296             {
2297                 int in_w = sp->sub.rects[i]->w;
2298                 int in_h = sp->sub.rects[i]->h;
2299                 int subw = is->subdec.avctx->width  ? is->subdec.avctx->width  : is->viddec_width;
2300                 int subh = is->subdec.avctx->height ? is->subdec.avctx->height : is->viddec_height;
2301                 int out_w = is->viddec_width  ? in_w * is->viddec_width  / subw : in_w;
2302                 int out_h = is->viddec_height ? in_h * is->viddec_height / subh : in_h;
2303
2304                 if (!(sp->subrects[i] = av_mallocz(sizeof(AVSubtitleRect))) ||
2305                     av_image_alloc(sp->subrects[i]->data, sp->subrects[i]->linesize, out_w, out_h, AV_PIX_FMT_YUVA420P, 16) < 0) {
2306                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate subtitle data\n");
2307                     exit(1);
2308                 }
2309
2310                 is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
2311                     in_w, in_h, AV_PIX_FMT_PAL8, out_w, out_h,
2312                     AV_PIX_FMT_YUVA420P, sws_flags, NULL, NULL, NULL);
2313                 if (!is->sub_convert_ctx) {
2314                     av_log(NULL, AV_LOG_FATAL, "Cannot initialize the sub conversion context\n");
2315                     exit(1);
2316                 }
2317                 sws_scale(is->sub_convert_ctx,
2318                           (void*)sp->sub.rects[i]->data, sp->sub.rects[i]->linesize,
2319                           0, in_h, sp->subrects[i]->data, sp->subrects[i]->linesize);
2320
2321                 sp->subrects[i]->w = out_w;
2322                 sp->subrects[i]->h = out_h;
2323                 sp->subrects[i]->x = sp->sub.rects[i]->x * out_w / in_w;
2324                 sp->subrects[i]->y = sp->sub.rects[i]->y * out_h / in_h;
2325             }
2326
2327             /* now we can update the picture count */
2328             frame_queue_push(&is->subpq);
2329         } else if (got_subtitle) {
2330             avsubtitle_free(&sp->sub);
2331         }
2332     }
2333     return 0;
2334 }
2335
2336 /* copy samples for viewing in editor window */
2337 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2338 {
2339     int size, len;
2340
2341     size = samples_size / sizeof(short);
2342     while (size > 0) {
2343         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2344         if (len > size)
2345             len = size;
2346         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2347         samples += len;
2348         is->sample_array_index += len;
2349         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2350             is->sample_array_index = 0;
2351         size -= len;
2352     }
2353 }
2354
2355 /* return the wanted number of samples to get better sync if sync_type is video
2356  * or external master clock */
2357 static int synchronize_audio(VideoState *is, int nb_samples)
2358 {
2359     int wanted_nb_samples = nb_samples;
2360
2361     /* if not master, then we try to remove or add samples to correct the clock */
2362     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2363         double diff, avg_diff;
2364         int min_nb_samples, max_nb_samples;
2365
2366         diff = get_clock(&is->audclk) - get_master_clock(is);
2367
2368         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2369             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2370             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2371                 /* not enough measures to have a correct estimate */
2372                 is->audio_diff_avg_count++;
2373             } else {
2374                 /* estimate the A-V difference */
2375                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2376
2377                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2378                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2379                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2380                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2381                     wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
2382                 }
2383                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2384                         diff, avg_diff, wanted_nb_samples - nb_samples,
2385                         is->audio_clock, is->audio_diff_threshold);
2386             }
2387         } else {
2388             /* too big difference : may be initial PTS errors, so
2389                reset A-V filter */
2390             is->audio_diff_avg_count = 0;
2391             is->audio_diff_cum       = 0;
2392         }
2393     }
2394
2395     return wanted_nb_samples;
2396 }
2397
2398 /**
2399  * Decode one audio frame and return its uncompressed size.
2400  *
2401  * The processed audio frame is decoded, converted if required, and
2402  * stored in is->audio_buf, with size in bytes given by the return
2403  * value.
2404  */
2405 static int audio_decode_frame(VideoState *is)
2406 {
2407     int data_size, resampled_data_size;
2408     int64_t dec_channel_layout;
2409     av_unused double audio_clock0;
2410     int wanted_nb_samples;
2411     Frame *af;
2412
2413     if (is->paused)
2414         return -1;
2415
2416     do {
2417 #if defined(_WIN32)
2418         while (frame_queue_nb_remaining(&is->sampq) == 0) {
2419             if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
2420                 return -1;
2421             av_usleep (1000);
2422         }
2423 #endif
2424         if (!(af = frame_queue_peek_readable(&is->sampq)))
2425             return -1;
2426         frame_queue_next(&is->sampq);
2427     } while (af->serial != is->audioq.serial);
2428
2429     data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(af->frame),
2430                                            af->frame->nb_samples,
2431                                            af->frame->format, 1);
2432
2433     dec_channel_layout =
2434         (af->frame->channel_layout && av_frame_get_channels(af->frame) == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2435         af->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(af->frame));
2436     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2437
2438     if (af->frame->format        != is->audio_src.fmt            ||
2439         dec_channel_layout       != is->audio_src.channel_layout ||
2440         af->frame->sample_rate   != is->audio_src.freq           ||
2441         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2442         swr_free(&is->swr_ctx);
2443         is->swr_ctx = swr_alloc_set_opts(NULL,
2444                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2445                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2446                                          0, NULL);
2447         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2448             av_log(NULL, AV_LOG_ERROR,
2449                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2450                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), av_frame_get_channels(af->frame),
2451                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2452             swr_free(&is->swr_ctx);
2453             return -1;
2454         }
2455         is->audio_src.channel_layout = dec_channel_layout;
2456         is->audio_src.channels       = av_frame_get_channels(af->frame);
2457         is->audio_src.freq = af->frame->sample_rate;
2458         is->audio_src.fmt = af->frame->format;
2459     }
2460
2461     if (is->swr_ctx) {
2462         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2463         uint8_t **out = &is->audio_buf1;
2464         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2465         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2466         int len2;
2467         if (out_size < 0) {
2468             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2469             return -1;
2470         }
2471         if (wanted_nb_samples != af->frame->nb_samples) {
2472             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2473                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2474                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2475                 return -1;
2476             }
2477         }
2478         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2479         if (!is->audio_buf1)
2480             return AVERROR(ENOMEM);
2481         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2482         if (len2 < 0) {
2483             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2484             return -1;
2485         }
2486         if (len2 == out_count) {
2487             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2488             if (swr_init(is->swr_ctx) < 0)
2489                 swr_free(&is->swr_ctx);
2490         }
2491         is->audio_buf = is->audio_buf1;
2492         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2493     } else {
2494         is->audio_buf = af->frame->data[0];
2495         resampled_data_size = data_size;
2496     }
2497
2498     audio_clock0 = is->audio_clock;
2499     /* update the audio clock with the pts */
2500     if (!isnan(af->pts))
2501         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2502     else
2503         is->audio_clock = NAN;
2504     is->audio_clock_serial = af->serial;
2505 #ifdef DEBUG
2506     {
2507         static double last_clock;
2508         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2509                is->audio_clock - last_clock,
2510                is->audio_clock, audio_clock0);
2511         last_clock = is->audio_clock;
2512     }
2513 #endif
2514     return resampled_data_size;
2515 }
2516
2517 /* prepare a new audio buffer */
2518 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2519 {
2520     VideoState *is = opaque;
2521     int audio_size, len1;
2522
2523     audio_callback_time = av_gettime_relative();
2524
2525     while (len > 0) {
2526         if (is->audio_buf_index >= is->audio_buf_size) {
2527            audio_size = audio_decode_frame(is);
2528            if (audio_size < 0) {
2529                 /* if error, just output silence */
2530                is->audio_buf = NULL;
2531                is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2532            } else {
2533                if (is->show_mode != SHOW_MODE_VIDEO)
2534                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2535                is->audio_buf_size = audio_size;
2536            }
2537            is->audio_buf_index = 0;
2538         }
2539         len1 = is->audio_buf_size - is->audio_buf_index;
2540         if (len1 > len)
2541             len1 = len;
2542         if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
2543             memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2544         else {
2545             memset(stream, 0, len1);
2546             if (!is->muted && is->audio_buf)
2547                 SDL_MixAudio(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1, is->audio_volume);
2548         }
2549         len -= len1;
2550         stream += len1;
2551         is->audio_buf_index += len1;
2552     }
2553     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2554     /* Let's assume the audio driver that is used by SDL has two periods. */
2555     if (!isnan(is->audio_clock)) {
2556         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2557         sync_clock_to_slave(&is->extclk, &is->audclk);
2558     }
2559 }
2560
2561 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2562 {
2563     SDL_AudioSpec wanted_spec, spec;
2564     const char *env;
2565     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2566     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2567     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2568
2569     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2570     if (env) {
2571         wanted_nb_channels = atoi(env);
2572         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2573     }
2574     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2575         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2576         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2577     }
2578     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2579     wanted_spec.channels = wanted_nb_channels;
2580     wanted_spec.freq = wanted_sample_rate;
2581     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2582         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2583         return -1;
2584     }
2585     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2586         next_sample_rate_idx--;
2587     wanted_spec.format = AUDIO_S16SYS;
2588     wanted_spec.silence = 0;
2589     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2590     wanted_spec.callback = sdl_audio_callback;
2591     wanted_spec.userdata = opaque;
2592     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2593         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2594                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2595         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2596         if (!wanted_spec.channels) {
2597             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2598             wanted_spec.channels = wanted_nb_channels;
2599             if (!wanted_spec.freq) {
2600                 av_log(NULL, AV_LOG_ERROR,
2601                        "No more combinations to try, audio open failed\n");
2602                 return -1;
2603             }
2604         }
2605         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2606     }
2607     if (spec.format != AUDIO_S16SYS) {
2608         av_log(NULL, AV_LOG_ERROR,
2609                "SDL advised audio format %d is not supported!\n", spec.format);
2610         return -1;
2611     }
2612     if (spec.channels != wanted_spec.channels) {
2613         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2614         if (!wanted_channel_layout) {
2615             av_log(NULL, AV_LOG_ERROR,
2616                    "SDL advised channel count %d is not supported!\n", spec.channels);
2617             return -1;
2618         }
2619     }
2620
2621     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2622     audio_hw_params->freq = spec.freq;
2623     audio_hw_params->channel_layout = wanted_channel_layout;
2624     audio_hw_params->channels =  spec.channels;
2625     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2626     audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
2627     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2628         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2629         return -1;
2630     }
2631     return spec.size;
2632 }
2633
2634 /* open a given stream. Return 0 if OK */
2635 static int stream_component_open(VideoState *is, int stream_index)
2636 {
2637     AVFormatContext *ic = is->ic;
2638     AVCodecContext *avctx;
2639     AVCodec *codec;
2640     const char *forced_codec_name = NULL;
2641     AVDictionary *opts = NULL;
2642     AVDictionaryEntry *t = NULL;
2643     int sample_rate, nb_channels;
2644     int64_t channel_layout;
2645     int ret = 0;
2646     int stream_lowres = lowres;
2647
2648     if (stream_index < 0 || stream_index >= ic->nb_streams)
2649         return -1;
2650
2651     avctx = avcodec_alloc_context3(NULL);
2652     if (!avctx)
2653         return AVERROR(ENOMEM);
2654
2655     ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
2656     if (ret < 0)
2657         goto fail;
2658     av_codec_set_pkt_timebase(avctx, ic->streams[stream_index]->time_base);
2659
2660     codec = avcodec_find_decoder(avctx->codec_id);
2661
2662     switch(avctx->codec_type){
2663         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2664         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2665         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2666     }
2667     if (forced_codec_name)
2668         codec = avcodec_find_decoder_by_name(forced_codec_name);
2669     if (!codec) {
2670         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2671                                       "No codec could be found with name '%s'\n", forced_codec_name);
2672         else                   av_log(NULL, AV_LOG_WARNING,
2673                                       "No codec could be found with id %d\n", avctx->codec_id);
2674         ret = AVERROR(EINVAL);
2675         goto fail;
2676     }
2677
2678     avctx->codec_id = codec->id;
2679     if(stream_lowres > av_codec_get_max_lowres(codec)){
2680         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2681                 av_codec_get_max_lowres(codec));
2682         stream_lowres = av_codec_get_max_lowres(codec);
2683     }
2684     av_codec_set_lowres(avctx, stream_lowres);
2685
2686 #if FF_API_EMU_EDGE
2687     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2688 #endif
2689     if (fast)
2690         avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2691 #if FF_API_EMU_EDGE
2692     if(codec->capabilities & AV_CODEC_CAP_DR1)
2693         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2694 #endif
2695
2696     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2697     if (!av_dict_get(opts, "threads", NULL, 0))
2698         av_dict_set(&opts, "threads", "auto", 0);
2699     if (stream_lowres)
2700         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2701     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2702         av_dict_set(&opts, "refcounted_frames", "1", 0);
2703     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2704         goto fail;
2705     }
2706     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2707         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2708         ret =  AVERROR_OPTION_NOT_FOUND;
2709         goto fail;
2710     }
2711
2712     is->eof = 0;
2713     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2714     switch (avctx->codec_type) {
2715     case AVMEDIA_TYPE_AUDIO:
2716 #if CONFIG_AVFILTER
2717         {
2718             AVFilterLink *link;
2719
2720             is->audio_filter_src.freq           = avctx->sample_rate;
2721             is->audio_filter_src.channels       = avctx->channels;
2722             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2723             is->audio_filter_src.fmt            = avctx->sample_fmt;
2724             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2725                 goto fail;
2726             link = is->out_audio_filter->inputs[0];
2727             sample_rate    = link->sample_rate;
2728             nb_channels    = avfilter_link_get_channels(link);
2729             channel_layout = link->channel_layout;
2730         }
2731 #else
2732         sample_rate    = avctx->sample_rate;
2733         nb_channels    = avctx->channels;
2734         channel_layout = avctx->channel_layout;
2735 #endif
2736
2737         /* prepare audio output */
2738         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2739             goto fail;
2740         is->audio_hw_buf_size = ret;
2741         is->audio_src = is->audio_tgt;
2742         is->audio_buf_size  = 0;
2743         is->audio_buf_index = 0;
2744
2745         /* init averaging filter */
2746         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2747         is->audio_diff_avg_count = 0;
2748         /* since we do not have a precise anough audio FIFO fullness,
2749            we correct audio sync only if larger than this threshold */
2750         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2751
2752         is->audio_stream = stream_index;
2753         is->audio_st = ic->streams[stream_index];
2754
2755         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2756         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2757             is->auddec.start_pts = is->audio_st->start_time;
2758             is->auddec.start_pts_tb = is->audio_st->time_base;
2759         }
2760         if ((ret = decoder_start(&is->auddec, audio_thread, is)) < 0)
2761             goto out;
2762         SDL_PauseAudio(0);
2763         break;
2764     case AVMEDIA_TYPE_VIDEO:
2765         is->video_stream = stream_index;
2766         is->video_st = ic->streams[stream_index];
2767
2768         is->viddec_width  = avctx->width;
2769         is->viddec_height = avctx->height;
2770
2771         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2772         if ((ret = decoder_start(&is->viddec, video_thread, is)) < 0)
2773             goto out;
2774         is->queue_attachments_req = 1;
2775         break;
2776     case AVMEDIA_TYPE_SUBTITLE:
2777         is->subtitle_stream = stream_index;
2778         is->subtitle_st = ic->streams[stream_index];
2779
2780         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2781         if ((ret = decoder_start(&is->subdec, subtitle_thread, is)) < 0)
2782             goto out;
2783         break;
2784     default:
2785         break;
2786     }
2787     goto out;
2788
2789 fail:
2790     avcodec_free_context(&avctx);
2791 out:
2792     av_dict_free(&opts);
2793
2794     return ret;
2795 }
2796
2797 static int decode_interrupt_cb(void *ctx)
2798 {
2799     VideoState *is = ctx;
2800     return is->abort_request;
2801 }
2802
2803 static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
2804     return stream_id < 0 ||
2805            queue->abort_request ||
2806            (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
2807            queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
2808 }
2809
2810 static int is_realtime(AVFormatContext *s)
2811 {
2812     if(   !strcmp(s->iformat->name, "rtp")
2813        || !strcmp(s->iformat->name, "rtsp")
2814        || !strcmp(s->iformat->name, "sdp")
2815     )
2816         return 1;
2817
2818     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2819                  || !strncmp(s->filename, "udp:", 4)
2820                 )
2821     )
2822         return 1;
2823     return 0;
2824 }
2825
2826 /* this thread gets the stream from the disk or the network */
2827 static int read_thread(void *arg)
2828 {
2829     VideoState *is = arg;
2830     AVFormatContext *ic = NULL;
2831     int err, i, ret;
2832     int st_index[AVMEDIA_TYPE_NB];
2833     AVPacket pkt1, *pkt = &pkt1;
2834     int64_t stream_start_time;
2835     int pkt_in_play_range = 0;
2836     AVDictionaryEntry *t;
2837     AVDictionary **opts;
2838     int orig_nb_streams;
2839     SDL_mutex *wait_mutex = SDL_CreateMutex();
2840     int scan_all_pmts_set = 0;
2841     int64_t pkt_ts;
2842
2843     if (!wait_mutex) {
2844         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
2845         ret = AVERROR(ENOMEM);
2846         goto fail;
2847     }
2848
2849     memset(st_index, -1, sizeof(st_index));
2850     is->last_video_stream = is->video_stream = -1;
2851     is->last_audio_stream = is->audio_stream = -1;
2852     is->last_subtitle_stream = is->subtitle_stream = -1;
2853     is->eof = 0;
2854
2855     ic = avformat_alloc_context();
2856     if (!ic) {
2857         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2858         ret = AVERROR(ENOMEM);
2859         goto fail;
2860     }
2861     ic->interrupt_callback.callback = decode_interrupt_cb;
2862     ic->interrupt_callback.opaque = is;
2863     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2864         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2865         scan_all_pmts_set = 1;
2866     }
2867     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2868     if (err < 0) {
2869         print_error(is->filename, err);
2870         ret = -1;
2871         goto fail;
2872     }
2873     if (scan_all_pmts_set)
2874         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2875
2876     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2877         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2878         ret = AVERROR_OPTION_NOT_FOUND;
2879         goto fail;
2880     }
2881     is->ic = ic;
2882
2883     if (genpts)
2884         ic->flags |= AVFMT_FLAG_GENPTS;
2885
2886     av_format_inject_global_side_data(ic);
2887
2888     opts = setup_find_stream_info_opts(ic, codec_opts);
2889     orig_nb_streams = ic->nb_streams;
2890
2891     err = avformat_find_stream_info(ic, opts);
2892
2893     for (i = 0; i < orig_nb_streams; i++)
2894         av_dict_free(&opts[i]);
2895     av_freep(&opts);
2896
2897     if (err < 0) {
2898         av_log(NULL, AV_LOG_WARNING,
2899                "%s: could not find codec parameters\n", is->filename);
2900         ret = -1;
2901         goto fail;
2902     }
2903
2904     if (ic->pb)
2905         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2906
2907     if (seek_by_bytes < 0)
2908         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2909
2910     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2911
2912     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2913         window_title = av_asprintf("%s - %s", t->value, input_filename);
2914
2915     /* if seeking requested, we execute it */
2916     if (start_time != AV_NOPTS_VALUE) {
2917         int64_t timestamp;
2918
2919         timestamp = start_time;
2920         /* add the stream start time */
2921         if (ic->start_time != AV_NOPTS_VALUE)
2922             timestamp += ic->start_time;
2923         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2924         if (ret < 0) {
2925             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2926                     is->filename, (double)timestamp / AV_TIME_BASE);
2927         }
2928     }
2929
2930     is->realtime = is_realtime(ic);
2931
2932     if (show_status)
2933         av_dump_format(ic, 0, is->filename, 0);
2934
2935     for (i = 0; i < ic->nb_streams; i++) {
2936         AVStream *st = ic->streams[i];
2937         enum AVMediaType type = st->codecpar->codec_type;
2938         st->discard = AVDISCARD_ALL;
2939         if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
2940             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2941                 st_index[type] = i;
2942     }
2943     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2944         if (wanted_stream_spec[i] && st_index[i] == -1) {
2945             av_log(NULL, AV_LOG_ERROR, "Stream specifier %s does not match any %s stream\n", wanted_stream_spec[i], av_get_media_type_string(i));
2946             st_index[i] = INT_MAX;
2947         }
2948     }
2949
2950     if (!video_disable)
2951         st_index[AVMEDIA_TYPE_VIDEO] =
2952             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2953                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2954     if (!audio_disable)
2955         st_index[AVMEDIA_TYPE_AUDIO] =
2956             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2957                                 st_index[AVMEDIA_TYPE_AUDIO],
2958                                 st_index[AVMEDIA_TYPE_VIDEO],
2959                                 NULL, 0);
2960     if (!video_disable && !subtitle_disable)
2961         st_index[AVMEDIA_TYPE_SUBTITLE] =
2962             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2963                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2964                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2965                                  st_index[AVMEDIA_TYPE_AUDIO] :
2966                                  st_index[AVMEDIA_TYPE_VIDEO]),
2967                                 NULL, 0);
2968
2969     is->show_mode = show_mode;
2970     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2971         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2972         AVCodecParameters *codecpar = st->codecpar;
2973         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2974         if (codecpar->width)
2975             set_default_window_size(codecpar->width, codecpar->height, sar);
2976     }
2977
2978     /* open the streams */
2979     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2980         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2981     }
2982
2983     ret = -1;
2984     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2985         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2986     }
2987     if (is->show_mode == SHOW_MODE_NONE)
2988         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2989
2990     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2991         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2992     }
2993
2994     if (is->video_stream < 0 && is->audio_stream < 0) {
2995         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2996                is->filename);
2997         ret = -1;
2998         goto fail;
2999     }
3000
3001     if (infinite_buffer < 0 && is->realtime)
3002         infinite_buffer = 1;
3003
3004     for (;;) {
3005         if (is->abort_request)
3006             break;
3007         if (is->paused != is->last_paused) {
3008             is->last_paused = is->paused;
3009             if (is->paused)
3010                 is->read_pause_return = av_read_pause(ic);
3011             else
3012                 av_read_play(ic);
3013         }
3014 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
3015         if (is->paused &&
3016                 (!strcmp(ic->iformat->name, "rtsp") ||
3017                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
3018             /* wait 10 ms to avoid trying to get another packet */
3019             /* XXX: horrible */
3020             SDL_Delay(10);
3021             continue;
3022         }
3023 #endif
3024         if (is->seek_req) {
3025             int64_t seek_target = is->seek_pos;
3026             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
3027             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
3028 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
3029 //      of the seek_pos/seek_rel variables
3030
3031             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
3032             if (ret < 0) {
3033                 av_log(NULL, AV_LOG_ERROR,
3034                        "%s: error while seeking\n", is->ic->filename);
3035             } else {
3036                 if (is->audio_stream >= 0) {
3037                     packet_queue_flush(&is->audioq);
3038                     packet_queue_put(&is->audioq, &flush_pkt);
3039                 }
3040                 if (is->subtitle_stream >= 0) {
3041                     packet_queue_flush(&is->subtitleq);
3042                     packet_queue_put(&is->subtitleq, &flush_pkt);
3043                 }
3044                 if (is->video_stream >= 0) {
3045                     packet_queue_flush(&is->videoq);
3046                     packet_queue_put(&is->videoq, &flush_pkt);
3047                 }
3048                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
3049                    set_clock(&is->extclk, NAN, 0);
3050                 } else {
3051                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
3052                 }
3053             }
3054             is->seek_req = 0;
3055             is->queue_attachments_req = 1;
3056             is->eof = 0;
3057             if (is->paused)
3058                 step_to_next_frame(is);
3059         }
3060         if (is->queue_attachments_req) {
3061             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
3062                 AVPacket copy;
3063                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
3064                     goto fail;
3065                 packet_queue_put(&is->videoq, &copy);
3066                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3067             }
3068             is->queue_attachments_req = 0;
3069         }
3070
3071         /* if the queue are full, no need to read more */
3072         if (infinite_buffer<1 &&
3073               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
3074             || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
3075                 stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
3076                 stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
3077             /* wait 10 ms */
3078             SDL_LockMutex(wait_mutex);
3079             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3080             SDL_UnlockMutex(wait_mutex);
3081             continue;
3082         }
3083         if (!is->paused &&
3084             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3085             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3086             if (loop != 1 && (!loop || --loop)) {
3087                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3088             } else if (autoexit) {
3089                 ret = AVERROR_EOF;
3090                 goto fail;
3091             }
3092         }
3093         ret = av_read_frame(ic, pkt);
3094         if (ret < 0) {
3095             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3096                 if (is->video_stream >= 0)
3097                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3098                 if (is->audio_stream >= 0)
3099                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3100                 if (is->subtitle_stream >= 0)
3101                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3102                 is->eof = 1;
3103             }
3104             if (ic->pb && ic->pb->error)
3105                 break;
3106             SDL_LockMutex(wait_mutex);
3107             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3108             SDL_UnlockMutex(wait_mutex);
3109             continue;
3110         } else {
3111             is->eof = 0;
3112         }
3113         /* check if packet is in play range specified by user, then queue, otherwise discard */
3114         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3115         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3116         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3117                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3118                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3119                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3120                 <= ((double)duration / 1000000);
3121         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3122             packet_queue_put(&is->audioq, pkt);
3123         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3124                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3125             packet_queue_put(&is->videoq, pkt);
3126         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3127             packet_queue_put(&is->subtitleq, pkt);
3128         } else {
3129             av_packet_unref(pkt);
3130         }
3131     }
3132
3133     ret = 0;
3134  fail:
3135     if (ic && !is->ic)
3136         avformat_close_input(&ic);
3137
3138     if (ret != 0) {
3139         SDL_Event event;
3140
3141         event.type = FF_QUIT_EVENT;
3142         event.user.data1 = is;
3143         SDL_PushEvent(&event);
3144     }
3145     SDL_DestroyMutex(wait_mutex);
3146     return 0;
3147 }
3148
3149 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3150 {
3151     VideoState *is;
3152
3153     is = av_mallocz(sizeof(VideoState));
3154     if (!is)
3155         return NULL;
3156     is->filename = av_strdup(filename);
3157     if (!is->filename)
3158         goto fail;
3159     is->iformat = iformat;
3160     is->ytop    = 0;
3161     is->xleft   = 0;
3162
3163     /* start video display */
3164     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3165         goto fail;
3166     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3167         goto fail;
3168     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3169         goto fail;
3170
3171     if (packet_queue_init(&is->videoq) < 0 ||
3172         packet_queue_init(&is->audioq) < 0 ||
3173         packet_queue_init(&is->subtitleq) < 0)
3174         goto fail;
3175
3176     if (!(is->continue_read_thread = SDL_CreateCond())) {
3177         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
3178         goto fail;
3179     }
3180
3181     init_clock(&is->vidclk, &is->videoq.serial);
3182     init_clock(&is->audclk, &is->audioq.serial);
3183     init_clock(&is->extclk, &is->extclk.serial);
3184     is->audio_clock_serial = -1;
3185     is->audio_volume = SDL_MIX_MAXVOLUME;
3186     is->muted = 0;
3187     is->av_sync_type = av_sync_type;
3188     is->read_tid     = SDL_CreateThread(read_thread, is);
3189     if (!is->read_tid) {
3190         av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
3191 fail:
3192         stream_close(is);
3193         return NULL;
3194     }
3195     return is;
3196 }
3197
3198 static void stream_cycle_channel(VideoState *is, int codec_type)
3199 {
3200     AVFormatContext *ic = is->ic;
3201     int start_index, stream_index;
3202     int old_index;
3203     AVStream *st;
3204     AVProgram *p = NULL;
3205     int nb_streams = is->ic->nb_streams;
3206
3207     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3208         start_index = is->last_video_stream;
3209         old_index = is->video_stream;
3210     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3211         start_index = is->last_audio_stream;
3212         old_index = is->audio_stream;
3213     } else {
3214         start_index = is->last_subtitle_stream;
3215         old_index = is->subtitle_stream;
3216     }
3217     stream_index = start_index;
3218
3219     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3220         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3221         if (p) {
3222             nb_streams = p->nb_stream_indexes;
3223             for (start_index = 0; start_index < nb_streams; start_index++)
3224                 if (p->stream_index[start_index] == stream_index)
3225                     break;
3226             if (start_index == nb_streams)
3227                 start_index = -1;
3228             stream_index = start_index;
3229         }
3230     }
3231
3232     for (;;) {
3233         if (++stream_index >= nb_streams)
3234         {
3235             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3236             {
3237                 stream_index = -1;
3238                 is->last_subtitle_stream = -1;
3239                 goto the_end;
3240             }
3241             if (start_index == -1)
3242                 return;
3243             stream_index = 0;
3244         }
3245         if (stream_index == start_index)
3246             return;
3247         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3248         if (st->codecpar->codec_type == codec_type) {
3249             /* check that parameters are OK */
3250             switch (codec_type) {
3251             case AVMEDIA_TYPE_AUDIO:
3252                 if (st->codecpar->sample_rate != 0 &&
3253                     st->codecpar->channels != 0)
3254                     goto the_end;
3255                 break;
3256             case AVMEDIA_TYPE_VIDEO:
3257             case AVMEDIA_TYPE_SUBTITLE:
3258                 goto the_end;
3259             default:
3260                 break;
3261             }
3262         }
3263     }
3264  the_end:
3265     if (p && stream_index != -1)
3266         stream_index = p->stream_index[stream_index];
3267     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3268            av_get_media_type_string(codec_type),
3269            old_index,
3270            stream_index);
3271
3272     stream_component_close(is, old_index);
3273     stream_component_open(is, stream_index);
3274 }
3275
3276
3277 static void toggle_full_screen(VideoState *is)
3278 {
3279 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3280     /* OS X needs to reallocate the SDL overlays */
3281     int i;
3282     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3283         is->pictq.queue[i].reallocate = 1;
3284 #endif
3285     is_full_screen = !is_full_screen;
3286     video_open(is, 1, NULL);
3287 }
3288
3289 static void toggle_audio_display(VideoState *is)
3290 {
3291     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3292     int next = is->show_mode;
3293     do {
3294         next = (next + 1) % SHOW_MODE_NB;
3295     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3296     if (is->show_mode != next) {
3297         fill_rectangle(screen,
3298                     is->xleft, is->ytop, is->width, is->height,
3299                     bgcolor, 1);
3300         is->force_refresh = 1;
3301         is->show_mode = next;
3302     }
3303 }
3304
3305 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3306     double remaining_time = 0.0;
3307     SDL_PumpEvents();
3308     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3309         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3310             SDL_ShowCursor(0);
3311             cursor_hidden = 1;
3312         }
3313         if (remaining_time > 0.0)
3314             av_usleep((int64_t)(remaining_time * 1000000.0));
3315         remaining_time = REFRESH_RATE;
3316         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3317             video_refresh(is, &remaining_time);
3318         SDL_PumpEvents();
3319     }
3320 }
3321
3322 static void seek_chapter(VideoState *is, int incr)
3323 {
3324     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3325     int i;
3326
3327     if (!is->ic->nb_chapters)
3328         return;
3329
3330     /* find the current chapter */
3331     for (i = 0; i < is->ic->nb_chapters; i++) {
3332         AVChapter *ch = is->ic->chapters[i];
3333         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3334             i--;
3335             break;
3336         }
3337     }
3338
3339     i += incr;
3340     i = FFMAX(i, 0);
3341     if (i >= is->ic->nb_chapters)
3342         return;
3343
3344     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3345     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3346                                  AV_TIME_BASE_Q), 0, 0);
3347 }
3348
3349 /* handle an event sent by the GUI */
3350 static void event_loop(VideoState *cur_stream)
3351 {
3352     SDL_Event event;
3353     double incr, pos, frac;
3354
3355     for (;;) {
3356         double x;
3357         refresh_loop_wait_event(cur_stream, &event);
3358         switch (event.type) {
3359         case SDL_KEYDOWN:
3360             if (exit_on_keydown) {
3361                 do_exit(cur_stream);
3362                 break;
3363             }
3364             switch (event.key.keysym.sym) {
3365             case SDLK_ESCAPE:
3366             case SDLK_q:
3367                 do_exit(cur_stream);
3368                 break;
3369             case SDLK_f:
3370                 toggle_full_screen(cur_stream);
3371                 cur_stream->force_refresh = 1;
3372                 break;
3373             case SDLK_p:
3374             case SDLK_SPACE:
3375                 toggle_pause(cur_stream);
3376                 break;
3377             case SDLK_m:
3378                 toggle_mute(cur_stream);
3379                 break;
3380             case SDLK_KP_MULTIPLY:
3381             case SDLK_0:
3382                 update_volume(cur_stream, 1, SDL_VOLUME_STEP);
3383                 break;
3384             case SDLK_KP_DIVIDE:
3385             case SDLK_9:
3386                 update_volume(cur_stream, -1, SDL_VOLUME_STEP);
3387                 break;
3388             case SDLK_s: // S: Step to next frame
3389                 step_to_next_frame(cur_stream);
3390                 break;
3391             case SDLK_a:
3392                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3393                 break;
3394             case SDLK_v:
3395                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3396                 break;
3397             case SDLK_c:
3398                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3399                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3400                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3401                 break;
3402             case SDLK_t:
3403                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3404                 break;
3405             case SDLK_w:
3406 #if CONFIG_AVFILTER
3407                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3408                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3409                         cur_stream->vfilter_idx = 0;
3410                 } else {
3411                     cur_stream->vfilter_idx = 0;
3412                     toggle_audio_display(cur_stream);
3413                 }
3414 #else
3415                 toggle_audio_display(cur_stream);
3416 #endif
3417                 break;
3418             case SDLK_PAGEUP:
3419                 if (cur_stream->ic->nb_chapters <= 1) {
3420                     incr = 600.0;
3421                     goto do_seek;
3422                 }
3423                 seek_chapter(cur_stream, 1);
3424                 break;
3425             case SDLK_PAGEDOWN:
3426                 if (cur_stream->ic->nb_chapters <= 1) {
3427                     incr = -600.0;
3428                     goto do_seek;
3429                 }
3430                 seek_chapter(cur_stream, -1);
3431                 break;
3432             case SDLK_LEFT:
3433                 incr = -10.0;
3434                 goto do_seek;
3435             case SDLK_RIGHT:
3436                 incr = 10.0;
3437                 goto do_seek;
3438             case SDLK_UP:
3439                 incr = 60.0;
3440                 goto do_seek;
3441             case SDLK_DOWN:
3442                 incr = -60.0;
3443             do_seek:
3444                     if (seek_by_bytes) {
3445                         pos = -1;
3446                         if (pos < 0 && cur_stream->video_stream >= 0)
3447                             pos = frame_queue_last_pos(&cur_stream->pictq);
3448                         if (pos < 0 && cur_stream->audio_stream >= 0)
3449                             pos = frame_queue_last_pos(&cur_stream->sampq);
3450                         if (pos < 0)
3451                             pos = avio_tell(cur_stream->ic->pb);
3452                         if (cur_stream->ic->bit_rate)
3453                             incr *= cur_stream->ic->bit_rate / 8.0;
3454                         else
3455                             incr *= 180000.0;
3456                         pos += incr;
3457                         stream_seek(cur_stream, pos, incr, 1);
3458                     } else {
3459                         pos = get_master_clock(cur_stream);
3460                         if (isnan(pos))
3461                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3462                         pos += incr;
3463                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3464                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3465                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3466                     }
3467                 break;
3468             default:
3469                 break;
3470             }
3471             break;
3472         case SDL_VIDEOEXPOSE:
3473             cur_stream->force_refresh = 1;
3474             break;
3475         case SDL_MOUSEBUTTONDOWN:
3476             if (exit_on_mousedown) {
3477                 do_exit(cur_stream);
3478                 break;
3479             }
3480             if (event.button.button == SDL_BUTTON_LEFT) {
3481                 static int64_t last_mouse_left_click = 0;
3482                 if (av_gettime_relative() - last_mouse_left_click <= 500000) {
3483                     toggle_full_screen(cur_stream);
3484                     cur_stream->force_refresh = 1;
3485                     last_mouse_left_click = 0;
3486                 } else {
3487                     last_mouse_left_click = av_gettime_relative();
3488                 }
3489             }
3490         case SDL_MOUSEMOTION:
3491             if (cursor_hidden) {
3492                 SDL_ShowCursor(1);
3493                 cursor_hidden = 0;
3494             }
3495             cursor_last_shown = av_gettime_relative();
3496             if (event.type == SDL_MOUSEBUTTONDOWN) {
3497                 if (event.button.button != SDL_BUTTON_RIGHT)
3498                     break;
3499                 x = event.button.x;
3500             } else {
3501                 if (!(event.motion.state & SDL_BUTTON_RMASK))
3502                     break;
3503                 x = event.motion.x;
3504             }
3505                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3506                     uint64_t size =  avio_size(cur_stream->ic->pb);
3507                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3508                 } else {
3509                     int64_t ts;
3510                     int ns, hh, mm, ss;
3511                     int tns, thh, tmm, tss;
3512                     tns  = cur_stream->ic->duration / 1000000LL;
3513                     thh  = tns / 3600;
3514                     tmm  = (tns % 3600) / 60;
3515                     tss  = (tns % 60);
3516                     frac = x / cur_stream->width;
3517                     ns   = frac * tns;
3518                     hh   = ns / 3600;
3519                     mm   = (ns % 3600) / 60;
3520                     ss   = (ns % 60);
3521                     av_log(NULL, AV_LOG_INFO,
3522                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3523                             hh, mm, ss, thh, tmm, tss);
3524                     ts = frac * cur_stream->ic->duration;
3525                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3526                         ts += cur_stream->ic->start_time;
3527                     stream_seek(cur_stream, ts, 0, 0);
3528                 }
3529             break;
3530         case SDL_VIDEORESIZE:
3531                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3532                                           SDL_HWSURFACE|(is_full_screen?SDL_FULLSCREEN:SDL_RESIZABLE)|SDL_ASYNCBLIT|SDL_HWACCEL);
3533                 if (!screen) {
3534                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3535                     do_exit(cur_stream);
3536                 }
3537                 screen_width  = cur_stream->width  = screen->w;
3538                 screen_height = cur_stream->height = screen->h;
3539                 cur_stream->force_refresh = 1;
3540             break;
3541         case SDL_QUIT:
3542         case FF_QUIT_EVENT:
3543             do_exit(cur_stream);
3544             break;
3545         case FF_ALLOC_EVENT:
3546             alloc_picture(event.user.data1);
3547             break;
3548         default:
3549             break;
3550         }
3551     }
3552 }
3553
3554 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3555 {
3556     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3557     return opt_default(NULL, "video_size", arg);
3558 }
3559
3560 static int opt_width(void *optctx, const char *opt, const char *arg)
3561 {
3562     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3563     return 0;
3564 }
3565
3566 static int opt_height(void *optctx, const char *opt, const char *arg)
3567 {
3568     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3569     return 0;
3570 }
3571
3572 static int opt_format(void *optctx, const char *opt, const char *arg)
3573 {
3574     file_iformat = av_find_input_format(arg);
3575     if (!file_iformat) {
3576         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3577         return AVERROR(EINVAL);
3578     }
3579     return 0;
3580 }
3581
3582 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3583 {
3584     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3585     return opt_default(NULL, "pixel_format", arg);
3586 }
3587
3588 static int opt_sync(void *optctx, const char *opt, const char *arg)
3589 {
3590     if (!strcmp(arg, "audio"))
3591         av_sync_type = AV_SYNC_AUDIO_MASTER;
3592     else if (!strcmp(arg, "video"))
3593         av_sync_type = AV_SYNC_VIDEO_MASTER;
3594     else if (!strcmp(arg, "ext"))
3595         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3596     else {
3597         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3598         exit(1);
3599     }
3600     return 0;
3601 }
3602
3603 static int opt_seek(void *optctx, const char *opt, const char *arg)
3604 {
3605     start_time = parse_time_or_die(opt, arg, 1);
3606     return 0;
3607 }
3608
3609 static int opt_duration(void *optctx, const char *opt, const char *arg)
3610 {
3611     duration = parse_time_or_die(opt, arg, 1);
3612     return 0;
3613 }
3614
3615 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3616 {
3617     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3618                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3619                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3620                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3621     return 0;
3622 }
3623
3624 static void opt_input_file(void *optctx, const char *filename)
3625 {
3626     if (input_filename) {
3627         av_log(NULL, AV_LOG_FATAL,
3628                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3629                 filename, input_filename);
3630         exit(1);
3631     }
3632     if (!strcmp(filename, "-"))
3633         filename = "pipe:";
3634     input_filename = filename;
3635 }
3636
3637 static int opt_codec(void *optctx, const char *opt, const char *arg)
3638 {
3639    const char *spec = strchr(opt, ':');
3640    if (!spec) {
3641        av_log(NULL, AV_LOG_ERROR,
3642               "No media specifier was specified in '%s' in option '%s'\n",
3643                arg, opt);
3644        return AVERROR(EINVAL);
3645    }
3646    spec++;
3647    switch (spec[0]) {
3648    case 'a' :    audio_codec_name = arg; break;
3649    case 's' : subtitle_codec_name = arg; break;
3650    case 'v' :    video_codec_name = arg; break;
3651    default:
3652        av_log(NULL, AV_LOG_ERROR,
3653               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3654        return AVERROR(EINVAL);
3655    }
3656    return 0;
3657 }
3658
3659 static int dummy;
3660
3661 static const OptionDef options[] = {
3662 #include "cmdutils_common_opts.h"
3663     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3664     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3665     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3666     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3667     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3668     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3669     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3670     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3671     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3672     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3673     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3674     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3675     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3676     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3677     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3678     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3679     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3680     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3681     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3682     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3683     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3684     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3685     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3686     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3687     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3688     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3689     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3690     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3691     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3692 #if CONFIG_AVFILTER
3693     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3694     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3695 #endif
3696     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3697     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3698     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3699     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3700     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3701     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3702     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3703     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3704     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3705     { NULL, },
3706 };
3707
3708 static void show_usage(void)
3709 {
3710     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3711     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3712     av_log(NULL, AV_LOG_INFO, "\n");
3713 }
3714
3715 void show_help_default(const char *opt, const char *arg)
3716 {
3717     av_log_set_callback(log_callback_help);
3718     show_usage();
3719     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3720     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3721     printf("\n");
3722     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3723     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3724 #if !CONFIG_AVFILTER
3725     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3726 #else
3727     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3728 #endif
3729     printf("\nWhile playing:\n"
3730            "q, ESC              quit\n"
3731            "f                   toggle full screen\n"
3732            "p, SPC              pause\n"
3733            "m                   toggle mute\n"
3734            "9, 0                decrease and increase volume respecti